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H/C/I low Dyno Numbers??

 
Old 01-17-2019, 04:49 PM
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Originally Posted by Dylan Latshaw View Post
-15 what do you mean?
Flowmasters seem to choke cars up. most cars that pull em and run a straight through design gain on the Dyno. Also your car definitely would benefit from 3" exh
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Old 01-17-2019, 04:51 PM
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Originally Posted by Dylan Latshaw View Post
bbk headers. I ported the heads
Swap those bbks for the SE 17/8 headers and 3" true duals and ditch the ls6 intake for a ported fast 92 and 92mm tb and FTP 98mm lid with a 85mm maf. Bet that thing would scream.
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Old 01-17-2019, 05:22 PM
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Originally Posted by Dylan Latshaw View Post
bbk headers. I ported the heads
Hand ported?
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Old 01-17-2019, 05:30 PM
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Originally Posted by Chris25 View Post
Swap those bbks for the SE 17/8 headers and 3" true duals and ditch the ls6 intake for a ported fast 92 and 92mm tb and FTP 98mm lid with a 85mm maf. Bet that thing would scream.
lol I wish I had 3k to spend 😁
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Old 01-17-2019, 05:37 PM
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You don't need to go that far; nice ideas though, huh?
Anyway, when you can, put a 3" or 3.5" mid pipe to a same-size muffler and tailpipe. While not totally optimum, it would be a huge improvement over what you have, and will make the power a lot closer to your original expectations.
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Old 01-17-2019, 05:45 PM
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4in. flow master y pipe merger into 4in. cutout
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Old 01-17-2019, 05:50 PM
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Originally Posted by G Atsma View Post
You don't need to go that far; nice ideas though, huh?
Anyway, when you can, put a 3" or 3.5" mid pipe to a same-size muffler and tailpipe. While not totally optimum, it would be a huge improvement over what you have, and will make the power a lot closer to your original expectations.
deffinantly. If I had the money that's what is do. I found a 3in magnaflow full exhaust for 225. Might do that. Just need a 3in y pipe.
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Old 01-17-2019, 05:56 PM
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Either that or a Flowmaster merge with the inlets sized like the legs of your Y, and a 3" outlet. Any muffler shop can weld all that together. You shouldn't need a whole new Y.
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Old 01-17-2019, 06:22 PM
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Originally Posted by G Atsma View Post
Either that or a Flowmaster merge with the inlets sized like the legs of your Y, and a 3" outlet. Any muffler shop can weld all that together. You shouldn't need a whole new Y.
I think my y pipe is 2.5in aswell..
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Old 01-17-2019, 06:36 PM
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Originally Posted by Dylan Latshaw
deffinantly. If I had the money that's what is do. I found a 3in magnaflow full exhaust for 225. Might do that. Just need a 3in y pipe.
Won't be enough to reach full potential.

Originally Posted by 98CayenneT/A
4in. flow master y pipe merger into 4in. cutout
This is your best option
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Old 01-17-2019, 06:46 PM
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1 word

Speed engineering true duals

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Old 01-17-2019, 07:03 PM
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Originally Posted by Dylan Latshaw View Post
lol I wish I had 3k to spend 😁
Honestly headers and true duals 500$ from speed engineering used fast 92 can be found for a good price now and days eBay 92mm tb used truck maff descreened and a used 98mm lid.
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Old 01-17-2019, 07:23 PM
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Originally Posted by Chris25 View Post
Honestly headers and true duals 500$ from speed engineering used fast 92 can be found for a good price now and days eBay 92mm tb used truck maff descreened and a used 98mm lid.
Great ideas! My main thought with my suggestions was something he can do much sooner considering he's operating on a tight budget. A (2) 2.5" into a 3" or 3.5" merge, into a like size midpipe and muffler is more budget friendly than changing out his whole system. Doing this before anything else will gain a ton of power. If/when the budget allows, all the other stuff can follow.
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Old 01-18-2019, 12:31 AM
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Originally Posted by Chris25 View Post
Honestly headers and true duals 500$ from speed engineering used fast 92 can be found for a good price now and days eBay 92mm tb used truck maff descreened and a used 98mm lid.
ok so 2k for all used parts that will probably gain me 20ish horsepower... or i can keep my good 92mm tb. Good ls6 intake, aftermarket maf, new bbk headers etc and add a full 3in exhaust for 50 bucks and a 100 dollar y pipe.. That'll gain me 10-15sh horsepower. 5-10 horsepower isn't worth all the time later and money it's take.. I could get a nitrous kit for 600 bucks and make 100 more hp....i have the supporting mods to do so...
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Old 01-18-2019, 12:34 AM
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Originally Posted by G Atsma View Post
Great ideas! My main thought with my suggestions was something he can do much sooner considering he's operating on a tight budget. A (2) 2.5" into a 3" or 3.5" merge, into a like size midpipe and muffler is more budget friendly than changing out his whole system. Doing this before anything else will gain a ton of power. If/when the budget allows, all the other stuff can follow.
I'll probably do something like this. Thabks guys! I talked to a tuner in Asheboro and he mentioned how bad CAM is..... so I'm going to put a new exhaust on there. Do a couple little things and send it to him to hopefully get my numbers to where I thought they'd be... above 425
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Old 01-18-2019, 03:49 AM
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Were gonna help him get his car straightened out.

for those that dont know the place he took his car CAM Carolina Auto Masters is filled with a bunch of idiots and i dont understand how this place is still in business.

if you ever hear anyone saying their gonna use that shop please steer them clear of those retards. Way to many horror stories I've heard and read about that place
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Old 01-18-2019, 04:22 AM
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Dylan,

Having a pair of cut outs added directly off of the header is inexpensive. For track or dyno uncap the cut-outs. Electric is nice but manual is less expensive.

My RS had a similar exhaust issue because the shop notched the Y pipe collector to fit a certain type of subframe connector. At the end of the project money was very tight. Replacing the exhaust etc wasn't an option. The twin cutouts were worth 20 whp on the dyno. The gains were from the start of the dyno pull to the end. Gained every where. Torque also increased for the whole dyno pull. Way to loud uncapped for the street, basically like open headers.

A friend gained ~30+ hp with a similar set up. He had a stock I pipe /mid-life and cat back. With your current set up I would expect 20 to 30 whp.

If you want twin electric cuts off of the headers are an option with a lot of flexibility but more expensive.
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Old 01-18-2019, 06:04 AM
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Check our mavn thread in gen iii internal and gains going to SE duals before assuming 20 hp
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Old 01-18-2019, 06:06 AM
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Originally Posted by Dylan Latshaw View Post
ok so 2k for all used parts that will probably gain me 20ish horsepower... or i can keep my good 92mm tb. Good ls6 intake, aftermarket maf, new bbk headers etc and add a full 3in exhaust for 50 bucks and a 100 dollar y pipe.. That'll gain me 10-15sh horsepower. 5-10 horsepower isn't worth all the time later and money it's take.. I could get a nitrous kit for 600 bucks and make 100 more hp....i have the supporting mods to do so...
I was just throwing out an idea and you also have to take into account the money saved selling your ls6 intake headers and exhaust. Your right it seems expensive but this is a pay to play sport. The others have valid points with a good budget in mind.
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Old 01-18-2019, 07:29 AM
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Originally Posted by Dylan Latshaw
I'll probably do something like this. Thabks guys! I talked to a tuner in Asheboro and he mentioned how bad CAM is..... so I'm going to put a new exhaust on there. Do a couple little things and send it to him to hopefully get my numbers to where I thought they'd be... above 425
Will not happen if you are set on 3 inch Y and 3 inch cat back.

Personal experience -- Mamo 220 heads, arguably the best available for a 5.7, 227/235 cam, 1-7/8 headers, 3 inch Y and cat back, all kinds of optimization. 395 rwhp. Talk about PISSED. Tuner exact words -- something is wrong with your exhaust.

With open headers, 470. Add X pipe, 3 inch true dual, light clutch, 496.

Yes duals are expensive, but cheaper than buying a cheap exhaust and THEN duals. Believe it or not we are trying to SAVE you money.
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