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FAST LSX-R 102mm Gains Or Loses Results

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Old 02-16-2011, 02:08 PM
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Default FAST LSX-R 102mm Gains Or Loses Results

Alright i know many of you guys have read the threads an posts from other members an vendors about the new fast piece not doing such a great job on Ls3/L92 combo's unless they were 427ci or bigger supposedly, but has anybody on here installed this an gained anything worth talking about from it or is the intake just really not worth it for the street for the hefty amount it costs to install one? I've seen great upstairs numbers from the vic jr, but i want to be able to drive on the street daily an i don't want to sacrifice torque for a peak number... So thats why i was gonna turn my head towards the fast section an see what they could do for me. I haven't seen anything very impressive on it though so it's really holding me back from what the car could be due to the lack of air flow with the L76 intake with a ported 92mm Tb from TSP. So what do you guys think about this thing i mean will it ever produce power ever on our Ls3/L92 headed builds?
Old 02-16-2011, 05:09 PM
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I made zero gain going from a stock l76 to a non ported 102mm. On my car is was $1,000 of wasted money.
Old 02-16-2011, 07:53 PM
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Originally Posted by mike c.
I made zero gain going from a stock l76 to a non ported 102mm. On my car is was $1,000 of wasted money.
What is your setup?

Thanks
Zeke
Old 02-22-2011, 09:35 AM
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For every person that says they didn't gain anything, There is another person that says they did. Only listen to the credible ones with back to back information, Not "I dynoed it this day of this month with this cam then changed this that and the other thing, Then threw a fast on it 6 months later and I lost power or didn't make anything. Pat G did a back to back test and showed gains on a stock cube engine. Either way this topic has been beaten to death and only stirs up a heated arguments, Do a search and read everything. If it were me I would port the stock piece for a stock size engine, But only have a very reputable porter do it.
Old 02-24-2011, 03:18 AM
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Originally Posted by formula17
For every person that says they didn't gain anything, There is another person that says they did.
This....
Old 02-24-2011, 01:29 PM
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The FAST is a SOLID piece on the LS7 and puts up great HP and TQ numbers, even on stock motors.
On the LS3 it shows consistent, but nominal/tiny, gains.
Unless you're running 427 or larger cubes, or SERIOUS power through a 6.2 liter motor, I'd be very cautious about this. I had a cammed LS3 and it wasn't worth my money.
Old 02-24-2011, 04:04 PM
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I'm curious if an Ls3 or if a FAST will be needed for my 416 build? I haven't been able to compare any set up, here or on the camaro5 and corvette forums for me to make a decision. I don't think 10~ hp o's worth 799 plus 450 fOr a TB
Old 02-24-2011, 07:32 PM
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I have a ls2 454 with a ported ls7 intake, tsp 285 heads, and ported 90 mm tb I'm finishing up. I was thinking of going to a fast 102 and new 102 tb if the gains would be worth it?
Old 02-25-2011, 07:41 AM
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Unless your setup is H/C you wouldn't see a gain .
Old 02-25-2011, 02:03 PM
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Originally Posted by _GTO_
Unless your setup is H/C you wouldn't see a gain .
Who are you talking to??

The 416 guy would see a gain, how much depends on his heads, cam, and current intake.
The 454 guy would see a hefty gain over any OEM style intake.
Old 02-26-2011, 04:14 AM
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Spend the money if you want but people have gone 9's with the 76 and LS3 intakes. This site is mostly about selling some one something they don't need!!!
Old 02-26-2011, 03:28 PM
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Sorry, i don't think this site is based on selling us products,( with the amount of post you have you must have sold a lot of stuff). i find this site very informative and give you a chance to talk to people with the same interests. take the info you get here and decide for your self what is good and what is bad.
Old 02-26-2011, 03:41 PM
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The truth is it exsists because of the sponsers. I'm not a sponser. I'm just stating the facts as I see them. Many people buy stuff they don't need because so and so person or shop tells them too. I stated a fact that you don't need a 102 to run single digit #'s . His money would be better spent in another area.JMHOP
Old 02-26-2011, 09:07 PM
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It would be nice if some sponsors would do some back to back Ls3 headed 416's On the dyno or track runs before we hand them over "more than one thousand dollars" you know? As I see it now I just might stick with an Ls3 intake. What do the rest of you think? Am I asking too much? I think it would be good for everyone in our shoes to know this information, before handing over that amount Of money, especially in todays economy.
Old 02-26-2011, 09:13 PM
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Originally Posted by jmilz28
The FAST is a SOLID piece on the LS7 and puts up great HP and TQ numbers, even on stock motors.
On the LS3 it shows consistent, but nominal/tiny, gains.
Unless you're running 427 or larger cubes, or SERIOUS power through a 6.2 liter motor, I'd be very cautious about this. I had a cammed LS3 and it wasn't worth my money.
True that, head/cam ls3 here and Ron Mowen(vengeance) and i agree the unported fast 102(stock throttle body) only made 1-2 rhwp at best on my car...If you have the extra money i say get it, it sure does look good under the hood Ported 102 on my ls7 i would say close to 8-10 rwhp........
Old 02-27-2011, 08:03 AM
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Originally Posted by litle88
It would be nice if some sponsors would do some back to back Ls3 headed 416's On the dyno or track runs before we hand them over "more than one thousand dollars" you know?
They cant do every request. Everyone asks their specific setup dynoed for free and given the results. R&D is not cheap, and neither is getting good data.

For example, chassis dynos do not produce good data, so most of your "no gains" are simply a result of bad data from a dyno operator that doesnt understand how to conduct real tesing.
Old 02-27-2011, 08:03 AM
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Originally Posted by Redcorvette2000
True that, head/cam ls3 here and Ron Mowen(vengeance) and i agree the unported fast 102(stock throttle body) only made 1-2 rhwp at best on my car...If you have the extra money i say get it, it sure does look good under the hood Ported 102 on my ls7 i would say close to 8-10 rwhp........
8-10 over a stock LS7 manifold? My LS7 manifold made 11 more rwhp from porting.
Old 02-27-2011, 08:34 AM
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Originally Posted by SweetS10V8
They cant do every request. Everyone asks their specific setup dynoed for free and given the results. R&D is not cheap, and neither is getting good data.

For example, chassis dynos do not produce good data, so most of your "no gains" are simply a result of bad data from a dyno operator that doesnt understand how to conduct real tesing.
Sorry I didn't mean to come across as a request just for me, but to the rest of us. There seems to be a growing trend lately with alot of members building 416's + with the Ls3's and L92's and even the Ls2 and Lq's who are switching over to Ls3 heads. Im not also looking for dyno runs but track times as well. I know R&D is expensive but so are those intakes and TB's. Are we just supposed to fork the cash over or can sponsors say hey guys we know times are tuff and this is what we gained on the dyno and the track with the FAST Vs Ls3 intakes. If no one can then so be it. Just saying.
Old 02-27-2011, 09:29 AM
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Originally Posted by litle88
It would be nice if some sponsors would do some back to back Ls3 headed 416's On the dyno or track runs before we hand them over "more than one thousand dollars" you know? As I see it now I just might stick with an Ls3 intake. What do the rest of you think? Am I asking too much? I think it would be good for everyone in our shoes to know this information, before handing over that amount Of money, especially in todays economy.
Sounds like you have been elected to do that test.

I would stick with the stock manifold for now. We just ran a 10.1 with the 76 manifold.
Old 02-27-2011, 01:07 PM
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Sir, I have no problem doing that when I'm getting tuned at Straightline performance. I'd do that but there are 3 things. One is that my car should be up and running within 3 weeks. The other is i still have to put in about 1k miles so I can properly break in this motor, and in March and April the weather sucks around here lol, It even snows in April lol. Lastly, if the gains SUCK and not worth it, I'm out 799.00 for an intake and about 400.00 on a Throttle body because obviously I won't be able to use a 102 TB. With 3 kids in catholic school and one in a state college and a stay at home wife on a cops salary that won't cut it


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