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What options are there for ready-to-go True Duals?

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Old Oct 28, 2004 | 10:27 AM
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Default What options are there for ready-to-go True Duals?

I am aware of the TSP setup, and this is likely the one i will go with. The primary reason for me going true dual is the banging Y pipe issue, and on top of that, the exhaust just sounds like **** now. JH Hookers, ORY, adj. Borla. It sucks. Even if all the rattling was gone, I still dont like the note at all. So anyhow, is the TSP system 2.5" or 3". I want a 2.5" system, I'll sacrifice the few hp up top to keep my bottom end, and I do not want any RATTLING ISSUES!! Just want to bolt it on and go. So who, if anyone, else offers a fabbed up true dual system? Thanks in advance for the help and answers.
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Old Oct 31, 2004 | 08:29 AM
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you could always order them from Lane's..
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Old Oct 31, 2004 | 09:05 AM
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Other than Lane's and TSP I don't think that there are any other mail order bolt on systems offered. I believe that TSP only does 3". You really might want to consider a 3" set up. Your car and mine have similar set ups and on the bottle my 2.5" duals cost me about 3 tenths in the 1/4 mile vs open headers, my MPH usually drops to about 120-122 vs 125-127 with the open headers. I'll be going with a 3" set up myself this winter.
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Old Nov 21, 2004 | 06:50 PM
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Originally Posted by GM Muscle
Other than Lane's and TSP I don't think that there are any other mail order bolt on systems offered. I believe that TSP only does 3". You really might want to consider a 3" set up. Your car and mine have similar set ups and on the bottle my 2.5" duals cost me about 3 tenths in the 1/4 mile vs open headers, my MPH usually drops to about 120-122 vs 125-127 with the open headers. I'll be going with a 3" set up myself this winter.
That's quite a loss. Whereas I slowed down .01 with open headers compared to with 2.5" duals on my bolt-on car. 2.5" should be good to 450 rwhp, but for big cubed, big cammed, big spray - you want at least 3". We've done many 3.5" all the way as well as 3.5" reduced to 3" after the X.

You shouldn't be seeing that much of a drop-off IMO though. What are your mods - and the specs on your duals?
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Old Nov 21, 2004 | 07:08 PM
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I think part of the problem is that I'm not running a nice merge X-pipe. I'm running full bolts ons plus I run anywhere from 175-200+ shot at the crank. I would like to have a 3" system built this winter but my car is slammed and as it is now my bullets will hit sometimes (there tucked up pretty good too). Would it be possible for you to run 3" pipe off the headers with dual cut outs and then step down to 2.5" before the x-pipe so the rest of the system has good clearance. Basicly I'm looking for the best of both worlds, I want great clearance plus a system that can support alot of power (I'll be adding a H/C set up this winter). Do you think that would be worth doing or just go 3" all the way. I'd probrably want 18" bullets, I have 12" bullets now and the car is way to loud especially on the bottle.

Thanks,
Andrew
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Old Nov 21, 2004 | 08:01 PM
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I'd go 2.5" simply b/c my 3" TSP true dual system on my slammed Formy absolutely sucks for clearance.
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Old Nov 22, 2004 | 06:21 PM
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Originally Posted by GM Muscle
I think part of the problem is that I'm not running a nice merge X-pipe. I'm running full bolts ons plus I run anywhere from 175-200+ shot at the crank. I would like to have a 3" system built this winter but my car is slammed and as it is now my bullets will hit sometimes (there tucked up pretty good too). Would it be possible for you to run 3" pipe off the headers with dual cut outs and then step down to 2.5" before the x-pipe so the rest of the system has good clearance. Basicly I'm looking for the best of both worlds, I want great clearance plus a system that can support alot of power (I'll be adding a H/C set up this winter). Do you think that would be worth doing or just go 3" all the way. I'd probrably want 18" bullets, I have 12" bullets now and the car is way to loud especially on the bottle.

Thanks,
Andrew
Your crossover is more than likely the problem. No-name and homemade X's just don't make the power as those that have been R&D'd to death. Get you a Dr. Gas! X, but it needs to be the same diameter as the collector of your headers. 3" collector ~ 3" X - and reduce to 2.5" after if you like. 3" all the way dumped and you should be making more power than through open headers. The NASCAR boys use the Dr. Gas X for a reason - and it's patented for a reason too. It makes awesome power. And is why our systems are a little more $ than the 'local' favorite's X system. Ground clearance won't be an issue either on a properly built system.

We had a customer pick up 30 rwhp and 30 rwtp(mid-range - exact peak numbers) OVER tuned open headers on a big heads/cam car.

Placing cut-outs before the X will defeat the purpose of the X - which is to scavenge exhaust and give you more horse-power than an open header motor.
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Old Nov 22, 2004 | 06:29 PM
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Originally Posted by 5POINT7
I'd go 2.5" simply b/c my 3" TSP true dual system on my slammed Formy absolutely sucks for clearance.
Is your TSP system 'flared' out from the X back - toward the outside corners of the rear, so to speak? Most of the ones I've seen are built that way, but the system pictured in GMHT goes straight back - like ours does. If it's flared, that puts the mufflers right under the rear floor-pans - which kills ground clearance. If you have the tail pipes cut right behind the X, and tucked(angled) into the DS tunnel better, you'll have considerably more ground clearance.

Otherwise, you better put some wheelie bars on your dumps before you scrape that thing off!
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Old Nov 22, 2004 | 06:33 PM
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Originally Posted by 5POINT7
I'd go 2.5" simply b/c my 3" TSP true dual system on my slammed Formy absolutely sucks for clearance.
We have installed several 3" systems on lowered cars with pretty good clearance. The clearance has alot to do with the install. We have seen cars come in with poor clearance & Joseph has readjusted the system to improve clearance.

I don't believe you will lose low end power with a 3" system PHANTA-Z. If you would like I can get you a graph from a mostly stock car after headers & x pipe install. The TSP true duals definately performs well down low
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Old Nov 23, 2004 | 09:48 AM
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Originally Posted by Jason 98 TA
We have installed several 3" systems on lowered cars with pretty good clearance. The clearance has alot to do with the install. We have seen cars come in with poor clearance & Joseph has readjusted the system to improve clearance.

I don't believe you will lose low end power with a 3" system PHANTA-Z. If you would like I can get you a graph from a mostly stock car after headers & x pipe install. The TSP true duals definately performs well down low
Disagree with the first paragraph, unless you 'adjust' the shape of the floor-boards.

Agree with the second paragraph - And X system(depending on the crossover), should make more power all across the power-band, including down low.
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Old Nov 23, 2004 | 11:35 AM
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Originally Posted by Lane
Your crossover is more than likely the problem. No-name and homemade X's just don't make the power as those that have been R&D'd to death. Get you a Dr. Gas! X, but it needs to be the same diameter as the collector of your headers. 3" collector ~ 3" X - and reduce to 2.5" after if you like. 3" all the way dumped and you should be making more power than through open headers. The NASCAR boys use the Dr. Gas X for a reason - and it's patented for a reason too. It makes awesome power. And is why our systems are a little more $ than the 'local' favorite's X system. Ground clearance won't be an issue either on a properly built system.

We had a customer pick up 30 rwhp and 30 rwtp(mid-range - exact peak numbers) OVER tuned open headers on a big heads/cam car.

Placing cut-outs before the X will defeat the purpose of the X - which is to scavenge exhaust and give you more horse-power than an open header motor.
Sounds good. I'll talk to you this winter when I'm ready for another set up. What are your normal lead times, a month or so?
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Old Nov 23, 2004 | 07:44 PM
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Lane I really don't know how most of the TSP duals you've seen exit under the rear floor boards. The first prototype system was the only one that had mufflers under the rear floor board. The production systems exit straight back & fits very well on lowered vehicles. There was ONE system produced with mufflers under the rear floor board, and it was only used for pictures to post. You're simply going off of pictures, so I'd assume that you haven't seen any of our production systems with that comment. Here's several pics of the duals systems exiting straight back from the x-pipe.

http://www.texas-speed.com/duals.asp

Our system is built using true mandrel benders and a jig, not a piece-together system from some angle bends. I don't think you're in a position to disagree with us readjusting systems since you haven't been here to witness it. Ours can be readjusted because it IS adjustable. It's not completely welded together, and our true duals system ships with 3" band clamps for added clearance and better sealing. If it helps you to sleep at night thinking you started a trend on where the exhaust exits, then so be it. We have tucked the true duals under cars lowered a solid 1.5" with no problems. Our system works with multiple long tube headers, can be shipped out the door, and can be installed by any of our customers in his/her garage.

If you plan on pushing your systems, then I'd suggest you become a paying sponsor like all of the other advertisers on this board.

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Old Nov 23, 2004 | 08:13 PM
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Originally Posted by Jason 98 TA
If you plan on pushing your systems, then I'd suggest you become a paying sponsor like all of the other advertisers on this board.
I was thinking the same thing. Lane, we would appreciate it if you keep your comments strictly technical based on this site, and make no attempts at soliciting your product unless it is directly through of of our current sponsors.

You can contact me if you wish to become a sponsor here.

Thanks
Tony
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Old Nov 23, 2004 | 11:22 PM
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Wasn't meaning any disrespect to the sponsor here. And, I don't think I was soliciting anyone's business - nor quoting prices, etc. But, if it appeared that way, I apologize.
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Old Nov 23, 2004 | 11:54 PM
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Originally Posted by Jason 98 TA
Our system is built using true mandrel benders and a jig, not a piece-together system from some angle bends. I don't think you're in a position to disagree with us readjusting systems since you haven't been here to witness it. Ours can be readjusted because it IS adjustable. It's not completely welded together, and our true duals system ships with 3" band clamps for added clearance and better sealing. If it helps you to sleep at night thinking you started a trend on where the exhaust exits, then so be it. We have tucked the true duals under cars lowered a solid 1.5" with no problems. Our system works with multiple long tube headers, can be shipped out the door, and can be installed by any of our customers in his/her garage.

If you plan on pushing your systems, then I'd suggest you become a paying sponsor like all of the other advertisers on this board.

Jason
Texas Speed & Performance
Just my technical opinion here, but the more 'adjustability' you have, the more places to leak you will have. Especially with slip on collectors. Granted, we have to use them most of the time on header collectors, because most headers have them. But adding a couple of more slip-on joints compounds the problem - even with the common 3" band clamps. Which is why most people that buy your systems are having them welded up.

But - from a business standpoint, I guess it is easier and more cost-effective to have one jig and multiple connections to try to fit multiple headers - instead of having multiple jigs specifically designed for multiple headers...

For the record, I'm not trying to 'help myself sleep better at night' - just offering some of what I've learned, building these systems for the past 2.5 years, to people on this board that may be interested.
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Old Nov 24, 2004 | 09:18 AM
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Well having had the TSP system for a few weeks now, and having dyno'd it, I can tell its a good product for a very good price. My car is not lowered at all, and I do scrape a bit in certain spots. But not at all what i would consider an exceptional or excessive amount. I will say that i cannot see how you could lower the car 1.5" and not have some serious clearance issues. Maybe i didn't install the system as "tucked" as possible, but I did spend 2 hours with the car on a lift trying different arrangements. I do intend to have this system welded sometime in the near future, and have some 3 bolt flanges installed at the collector. I called and talked to Lane about his system during my decision making process, and the price difference between his and the TSP was significant to say the least, especially since TSP set my shop up as a dealer (I'm the sales manager of a shop here in Charlotte). That was my deciding factor, plain and simple. I didn't have the extra $200+ to spare at the time.

You can see the dyno numbers in my sig, that's on a nitrous tune as well (12.7/12.8 AF, 26 deg @ WOT, TR-6's @ .038). You can't argue with that torque number, and it comes on plenty quick too. I am positive i could get 360+ rwhp and 370+ tq out of this setup with an aggressive, cold weather, all-motor tune. This is still stock pulley and TB as well, so not quite full bolt on. Yeah, you could say I'm happy.
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Old Nov 24, 2004 | 10:22 AM
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Originally Posted by PHANTA-Z
Well having had the TSP system for a few weeks now, and having dyno'd it, I can tell its a good product for a very good price. My car is not lowered at all, and I do scrape a bit in certain spots. But not at all what i would consider an exceptional or excessive amount. I will say that i cannot see how you could lower the car 1.5" and not have some serious clearance issues. Maybe i didn't install the system as "tucked" as possible, but I did spend 2 hours with the car on a lift trying different arrangements. I do intend to have this system welded sometime in the near future, and have some 3 bolt flanges installed at the collector. I called and talked to Lane about his system during my decision making process, and the price difference between his and the TSP was significant to say the least, especially since TSP set my shop up as a dealer (I'm the sales manager of a shop here in Charlotte). That was my deciding factor, plain and simple. I didn't have the extra $200+ to spare at the time.
I remember talking to you. Glad you're happy with your system. $200 higher? Must have been a while back..
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Old Nov 24, 2004 | 10:33 AM
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Originally Posted by Lane
I remember talking to you. Glad you're happy with your system. $200 higher? Must have been a while back..
Month or so. You cant compare the TSP advertised price, my cost was somewhat less. Dont get me wrong, i was very impressed with what i had seen and heard of your systems, and for someone spending a bit more cash, I think its a way to go. And i do appreciate the time you spent with me on the phone.
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Old Nov 25, 2004 | 12:42 AM
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Originally Posted by PHANTA-Z
Month or so. You cant compare the TSP advertised price, my cost was somewhat less. Dont get me wrong, i was very impressed with what i had seen and heard of your systems, and for someone spending a bit more cash, I think its a way to go. And i do appreciate the time you spent with me on the phone.
No problem. Good luck with the car!

I guess I could make the X and lower the price, but I'm a big believer in the Dr. Gas! crossover. And they're not cheap. Neither are the various name-brand mufflers I use.

For the price though - you can't beat the TSP system!
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Old Nov 25, 2004 | 06:31 PM
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lane, you send out systems that go all the way back over the axle and if so how much??
pm me if you must.
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