1/4 mile improvements with SLP 2OTL
Thread Starter
Registered User
Joined: Sep 1998
Posts: 679
From: Oakville, Ontario
1/4 mile improvements with SLP 2OTL
I did a search and didn't find the answer to this question.
What kind of gains have you guys seen with putting this catback on a stock LT1? It's going to be my only modification (for a little while) and I was hoping to see about a one tenth/one mph improvement in my quarter mile times.
Does this sound about right, or would I see more than this?
Also, does anyone have any pics of what this catback looks like on a Formula?
What kind of gains have you guys seen with putting this catback on a stock LT1? It's going to be my only modification (for a little while) and I was hoping to see about a one tenth/one mph improvement in my quarter mile times.
Does this sound about right, or would I see more than this?
Also, does anyone have any pics of what this catback looks like on a Formula?
Registered User
Joined: Dec 1969
Posts: 27,727
From: Little Rock, AR
Dont' know about times, but it is a very free flowing system. Before the Loudmouth, it was probably the highest flowing cat back that SLP made (straight in/out). Seems like it has to be worth a little. 
I believe it was the optional exhaust on the 1997 Comp T/A.
I believe it was the optional exhaust on the 1997 Comp T/A.
Registered User
Joined: Apr 2003
Posts: 1,591
From: PA
2OTL
he has a sound clip too, cept it's an LS1. His tips are kinda crooked too.
I have it on my formy and love it, looks and sound. All the picture on my site still have the old borla.
I haven't tracked mine since I put it on, but i also added headers so it won't matter. .1/1mph is all i'd hope for though.
-brent
he has a sound clip too, cept it's an LS1. His tips are kinda crooked too.
I have it on my formy and love it, looks and sound. All the picture on my site still have the old borla.
I haven't tracked mine since I put it on, but i also added headers so it won't matter. .1/1mph is all i'd hope for though.
-brent
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Joined: Mar 2003
Posts: 1,876
From: Maryland
Originally posted by EviLBoX
I haven't had my car at the track since I installed the 2OTL, but I think .1-.2 and 1-2 mph is reasonable. I know someone dyno tested it vs. a cutout and there was only a 3 hp difference.
I haven't had my car at the track since I installed the 2OTL, but I think .1-.2 and 1-2 mph is reasonable. I know someone dyno tested it vs. a cutout and there was only a 3 hp difference.
Administrator
Joined: Mar 1999
Posts: 3,664
From: Brunswick, Maine 04011
A catback will/should help if that is where the greatest restriction is. If the major restriction is in the exhaust headers then I would not expect any gain, but it would probably sound much better.
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Joined: Sep 2002
Posts: 83
From: Pa
Originally posted by tnthub
A catback will/should help if that is where the greatest restriction is. If the major restriction is in the exhaust headers then I would not expect any gain, but it would probably sound much better.
A catback will/should help if that is where the greatest restriction is. If the major restriction is in the exhaust headers then I would not expect any gain, but it would probably sound much better.
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Joined: Nov 2001
Posts: 3,515
From: Kansas
i like how my 2OTL sounds! cant comment on the performance but its so small and light weight that i cant see that muffler being very restrictive. now with a cutout at the track i gained 1-2 mph but that was with a different catback.
Thread Starter
Registered User
Joined: Sep 1998
Posts: 679
From: Oakville, Ontario
Originally posted by Antz97ZNJ
been here since 98 and your asking that question
....1-2 tenths ..around 10 hp gain like every other catback
been here since 98 and your asking that question
....1-2 tenths ..around 10 hp gain like every other catback
Thread Starter
Registered User
Joined: Sep 1998
Posts: 679
From: Oakville, Ontario
Originally posted by turbo_Z
i like how my 2OTL sounds! cant comment on the performance but its so small and light weight that i cant see that muffler being very restrictive.
i like how my 2OTL sounds! cant comment on the performance but its so small and light weight that i cant see that muffler being very restrictive.
This reminds me of another question. How much lighter is this catback compared to the stock setup? It must save a few pounds.
