Easy rwhp boosts
Instructor
Joined: Nov 2011
Posts: 128
Likes: 21
From: Meridian ID
My plan: LT headers, LOUDER cat-back exhaust, LS6 intake, CAI, fresh set of spark plugs, and a tune. I don't want to get too carried away. YET.
I haven't jumped on anything yet because my clutch is dying. I kinda want to baby the clutch as much as I can and do it all at once.
Thread Starter
Pro
Joined: Jul 2012
Posts: 715
Likes: 17
I am along similar lines as you . . .
My plan: LT headers, LOUDER cat-back exhaust, LS6 intake, CAI, fresh set of spark plugs, and a tune. I don't want to get too carried away. YET.
I haven't jumped on anything yet because my clutch is dying. I kinda want to baby the clutch as much as I can and do it all at once.
My plan: LT headers, LOUDER cat-back exhaust, LS6 intake, CAI, fresh set of spark plugs, and a tune. I don't want to get too carried away. YET.
I haven't jumped on anything yet because my clutch is dying. I kinda want to baby the clutch as much as I can and do it all at once.
as for push rods im not sure on any info i have but heres a link that seems to be good.
http://forums.corvetteforum.com/c5-t...re-length.html
Instructor
Joined: Nov 2011
Posts: 128
Likes: 21
From: Meridian ID
http://forums.corvetteforum.com/c5-t...re-length.html
This link breaks it down very nicely.
HTHY
Instructor
Joined: Nov 2011
Posts: 128
Likes: 21
From: Meridian ID
Thread Starter
Pro
Joined: Jul 2012
Posts: 715
Likes: 17
Yes, you can send yours to various vendors and have is ported, or just buy a ported one ans sell yours. Or if you think you know how to do it yourself without over-porting you can save money that way.
Obviously a professional job will be the best bet. But I am happy with my home port job.
Obviously a professional job will be the best bet. But I am happy with my home port job.
Instructor
Joined: Nov 2011
Posts: 128
Likes: 21
From: Meridian ID
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Le Mans Master
Joined: Aug 2005
Posts: 5,375
Likes: 328
From: CA.
St. Jude Donor '13-'14-'15
I would NEVER try and home port a T-Body-- especially a drive by wire one !
This is the best company I've found---Great product--great price--fast turn around--
( you send him yours to have ported) He has done 1000's and 1000's of them
Good reputation and a pleasure to do business with his Owener is Mark Shaner
Not a lot of HP in a port job--maybe only 3-5 RWHP---but it's cheap and easy and your throttle response and action is crisper---- BUT if you try and port it your self-- and mess it up--you have a piece of junk that is NOT repairable---why risk it- !!!
website http://www.s2performance.net/
This is the best company I've found---Great product--great price--fast turn around--
( you send him yours to have ported) He has done 1000's and 1000's of them
Good reputation and a pleasure to do business with his Owener is Mark Shaner
Not a lot of HP in a port job--maybe only 3-5 RWHP---but it's cheap and easy and your throttle response and action is crisper---- BUT if you try and port it your self-- and mess it up--you have a piece of junk that is NOT repairable---why risk it- !!!
website http://www.s2performance.net/
Melting Slicks
Joined: Jun 2012
Posts: 3,163
Likes: 6
From: Oceanside California
I would NEVER try and home port a T-Body-- especially a drive by wire one !
This is the best company I've found---Great product--great price--fast turn around--
( you send him yours to have ported) He has done 1000's and 1000's of them
Good reputation and a pleasure to do business with his Owener is Mark Shaner
Not a lot of HP in a port job--maybe only 3-5 RWHP---but it's cheap and easy and your throttle response and action is crisper---- BUT if you try and port it your self-- and mess it up--you have a piece of junk that is NOT repairable---why risk it- !!!
website http://www.s2performance.net/
This is the best company I've found---Great product--great price--fast turn around--
( you send him yours to have ported) He has done 1000's and 1000's of them
Good reputation and a pleasure to do business with his Owener is Mark Shaner
Not a lot of HP in a port job--maybe only 3-5 RWHP---but it's cheap and easy and your throttle response and action is crisper---- BUT if you try and port it your self-- and mess it up--you have a piece of junk that is NOT repairable---why risk it- !!!
website http://www.s2performance.net/
Safety Car
Joined: Oct 2004
Posts: 4,816
Likes: 132
From: Plano TX
Cat back exhaust alone will give you 0 horsepower gains, zilch,nada,nothing, you may end up losing some hp.. They are for sound only.. The restrictive part of your exhaust is in the stock exhaust manifolds ,pre-cat and catayltic converters.. Go with longtube headers and high flow cats.
Last edited by David426; Sep 13, 2012 at 02:53 PM.
Melting Slicks
Joined: Jun 2012
Posts: 3,163
Likes: 6
From: Oceanside California
There certainly are better mods out there. But cat backs are still one of the first things to do for most people because of the sound and dress-up of the rear end.
Racer
Joined: May 2009
Posts: 399
Likes: 3
From: jacksonville fla
Couldn't agree more, excluding nitrous a stall is the best bang for the buck on an A4. Plus a stall will make your car perform even better when you add other mods. Do at least a 3200 stall, a Yank SS3200 or SS3600 would be my choice.
Instructor
Joined: Nov 2011
Posts: 128
Likes: 21
From: Meridian ID
Cat back exhaust alone will give you 0 horsepower gains, zilch,nada,nothing, you may end up losing some hp.. They are for sound only.. The restrictive part of your exhaust is in the stock exhaust manifolds ,pre-cat and catayltic converters.. Go with longtube headers and high flow cats.
My thought on cat-back: if the car sounds cooler, then it's GOT to be faster, RIGHT? Just like a fancy chrome oil fill cap is worth about 8 HP alone.
Safety Car
Joined: Oct 2004
Posts: 4,816
Likes: 132
From: Plano TX
There's a few benefits in addition to the sound someone is after. Better fuel economy is usually seen, most kits reduce weight. Especially straight pipes. And most after market mufflers do have less restriction. The power increase would be small. No 10 to 15hp like they claim, but I think there is a few ponies that make it to the wheels.
There certainly are better mods out there. But cat backs are still one of the first things to do for most people because of the sound and dress-up of the rear end.
There certainly are better mods out there. But cat backs are still one of the first things to do for most people because of the sound and dress-up of the rear end.
Tech Contributor
Joined: Jan 2004
Posts: 20,030
Likes: 289
From: Wylie TX --> Less is More, except under the hood !
Try this experiment... Take a cocktail straw or a coffee stir straw .. This will represent the first part of your cars exhaust stock exhaust system, exhaust mainifold,pre cat up to the catalyitic converter.. Blow through the straw to get an idea of the airflow.. Now take a regular size straw and tape it air tight to the end of the coffee stir straw.. The larger straw represents your cat back system. Now you have a representation of the full exhaust.. Blow through the coffee straw,, is the air flow any better with the big straw on the end? Nope.. Now try putting a garden hose at the end of the straw and tape it on the stir stick airtight.. Blow through the straw... Any more airflow coming through? Nope.. Next, take a 4inch diameter piece of PVC pipe.. Tape it too the stir straw, and see if the airflow is increased... Nope.. The restrictive air flow is the first part of the exhaust which you need Longtube headers and a highflow cats.. This is where you will see power impovements with aftermarket catback systems
Toque
Melting Slicks
Joined: Jun 2012
Posts: 3,163
Likes: 6
From: Oceanside California
Try this experiment... Take a cocktail straw or a coffee stir straw .. This will represent the first part of your cars exhaust stock exhaust system, exhaust mainifold,pre cat up to the catalyitic converter.. Blow through the straw to get an idea of the airflow.. Now take a regular size straw and tape it air tight to the end of the coffee stir straw.. The larger straw represents your cat back system. Now you have a representation of the full exhaust.. Blow through the coffee straw,, is the air flow any better with the big straw on the end? Nope.. Now try putting a garden hose at the end of the straw and tape it on the stir stick airtight.. Blow through the straw... Any more airflow coming through? Nope.. Next, take a 4inch diameter piece of PVC pipe.. Tape it too the stir straw, and see if the airflow is increased... Nope.. The restrictive air flow is the first part of the exhaust which you need Longtube headers and a highflow cats.. This is where you will see power impovements with aftermarket catback systems
). An x-pipe and axle back will help with this, thus increasing power. Anything on par with a long tube header set up? No. But there are benefits to be had.By the way, this is all in good fun, so don't freak out. I couldnt resist
