[Z06] LT Headers- Reasonable HP Expectations?
Thread Starter
Burning Brakes
Joined: Aug 2007
Posts: 831
Likes: 2
From: Houston Texas
LT Headers- Reasonable HP Expectations?
I have a 2002 Z06 which EnglandGreen recently dyno tuned at 374RWHP. The only mods were as follows: CAI Intake (homemade with KN Filter); Magnaflow X-Pipe; and Corsa Extreme Cat Back System.
Stephen and Jason both indicated that I had a fairly healthy basically stock Z06 to yield the 374 RWHP.
I am contemplating having LT Header (with Cats) installed by EnglandGreen and having them re-run the dyno tune.
With 374RWHP already - What can I realistically expect ( no BS) to gain in RWHP with the addition of a LT Header system?
I am guessing 385 RWHP - Obviously for the dollars being spent I would prefer to see 390RWHP plus.
Anyone ?
Stephen and Jason both indicated that I had a fairly healthy basically stock Z06 to yield the 374 RWHP.
I am contemplating having LT Header (with Cats) installed by EnglandGreen and having them re-run the dyno tune.
With 374RWHP already - What can I realistically expect ( no BS) to gain in RWHP with the addition of a LT Header system?
I am guessing 385 RWHP - Obviously for the dollars being spent I would prefer to see 390RWHP plus.
Anyone ?
Last edited by NatB; Oct 30, 2009 at 12:11 PM.
Supporting Tuner
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From: ================== Houston, Texas www.englandgreen.com ================== Necessary Evil™ __________
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St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14
My guess is around 385rwhp, possibly even 390rwhp. The highest we have seen on a bone stock Z06 with CAI & full exhaust through the Ti catback is 395rwhp on a Dynojet 248x.
Stephen
Stephen
Last edited by EG@EnglandGreen; Oct 30, 2009 at 01:46 PM.
Melting Slicks
Joined: Dec 2006
Posts: 2,186
Likes: 2
From: Woodinville WA
Long tubes in themselves only contribute around 15hp to these cars on a stock engined bolt-on car. If you are doing the install and tune yourself it might be worth the cost IMO. But if you are farming it out you must ask yourself is $1,200-$1,500 for the headers + install and re-tune.
Depending on where you are doing it you could be well over $2K for 15hp. Might be good for a tenth or two in the 1/4 mile. If it seems worth it to you that's your call.
Depending on where you are doing it you could be well over $2K for 15hp. Might be good for a tenth or two in the 1/4 mile. If it seems worth it to you that's your call.
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Burning Brakes
Joined: Sep 2000
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From: Scottsdale AZ
I made 393 with LG Pro's /w cats & Blackwing through the Ti's. I would think 15-20hp is reasonable with the addition of long tubes and new tune.
Last edited by Rob 2K1; Oct 31, 2009 at 08:50 AM.
Burning Brakes
Joined: Aug 2007
Posts: 880
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From: Bath PA
My 2001 Z baseline dyno run with stock everything except K&N filter in the stock box was 331rwhp. With Blackwing, CF bridge, LG Pro LTs & tune she bumped to 380rwhp. Everything else still stock including Ti exhaust.
Instructor
Joined: Feb 2007
Posts: 240
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From: Lewistown MT
An 01 will respond a bit better to bolt-ons than an 02+ b/c the factory airbox and pup cats were restrictions that were changed for 02 to help increase the output.
Thread Starter
Burning Brakes
Joined: Aug 2007
Posts: 831
Likes: 2
From: Houston Texas
Thanks everyone for responding to my post !
I am figuring LT Headers with cats ( either LG Pros or American Racing) will bump my present 374 RWHP to the range of 380 to 390 RWHP - likely around 385 RWHP.
On the high end- it sounds like 390 to 394 RWHP is possible while maintaining a safe tune.
I am figuring LT Headers with cats ( either LG Pros or American Racing) will bump my present 374 RWHP to the range of 380 to 390 RWHP - likely around 385 RWHP.
On the high end- it sounds like 390 to 394 RWHP is possible while maintaining a safe tune.
Drifting
Joined: Oct 2009
Posts: 1,438
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From: Always in my lane.
Sounds pretty healthy but I would discount the cat-back exhaust because the gains there are pretty minimal. Long tubes would probably bump it up about 10-15hp. The stock TI is less restrictive than people think. My 01Z has Blackwing, modified radiator shroud, Vram power duct,Stainless works headers, high flow cats , X-pipe and tune for 392hp-387lbsft. Im all good!!
Last edited by DARRYLZO6; Oct 31, 2009 at 06:27 PM.
Melting Slicks
Joined: Dec 2006
Posts: 2,186
Likes: 2
From: Woodinville WA
Thanks everyone for responding to my post !
I am figuring LT Headers with cats ( either LG Pros or American Racing) will bump my present 374 RWHP to the range of 380 to 390 RWHP - likely around 385 RWHP.
On the high end- it sounds like 390 to 394 RWHP is possible while maintaining a safe tune.
I am figuring LT Headers with cats ( either LG Pros or American Racing) will bump my present 374 RWHP to the range of 380 to 390 RWHP - likely around 385 RWHP.
On the high end- it sounds like 390 to 394 RWHP is possible while maintaining a safe tune.
Thread Starter
Burning Brakes
Joined: Aug 2007
Posts: 831
Likes: 2
From: Houston Texas
In Houston you get a fine for not running cats- I know people who've been pulled over and the LEO checked underneath for cats. Serious fine I think.
Regardless- the cats are there to reduce the pollution my kids are going to have to deal for years to come. I'm sticking with them
Regardless- the cats are there to reduce the pollution my kids are going to have to deal for years to come. I'm sticking with them
Le Mans Master
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From: Admit Nothing, Deny Everything, Make Counter Accusations.
Burning Brakes
Joined: Aug 2007
Posts: 880
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From: Bath PA
There was an article comparing LG Pro-series with and without hi-flo cats. No reason not to have them unless it's a track only car.
Corvette Fever or one of those.