More power - cheap
Thread Starter
Racer
Joined: Jun 2004
Posts: 313
Likes: 0
From: Macomb MI
More power - cheap
For those of you that have an L-98, here a fairly inexpensive way to pick up serveral horsepower and a lot of good sound. I replaced the Y-pipe and the precats with a new pipe and single converter. You can feel the power at low speed and the sound is much improved.
Le Mans Master
Joined: Jul 2007
Posts: 5,356
Likes: 2
From: No HOA, New Hampshire
Cruise-In X Veteran
St. Jude Donor '09
Maybe but not much. If I was to change the exhaust for performance, I go with headers first. The breathing problem with the L98 is the intake. IMHO
Intermediate
Joined: Sep 2007
Posts: 33
Likes: 0
From: DuBois PA
Just did the same thing. Dumped the precats with the Catco system from Jegs or Summit. I don't recall now, I've bought so many items in the last 3 monthc. Single cat now. Stock cleaned up y-pipe and the LT1 black tipped muffler eliminators. The car sounds great now. Revs quicker also. I think the old cats were shot, clogged or whatever they become with age.
Thread Starter
Racer
Joined: Jun 2004
Posts: 313
Likes: 0
From: Macomb MI
Team Owner
Joined: Oct 2004
Posts: 81,241
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From: altered state
St. Jude Donor '05
Tech Contributor
Joined: Oct 2008
Posts: 3,729
Likes: 190
From: Custer, WI
The intake air box isn't restrictive, its the runners/plenum/base.
When i ported my intake manifold base, i thought to myself, who the **** designed this?
at the bottom of the ports, there were little half inch tall walls across the whole port. what the hell is that there for? BLOCKING AIR FLOW.
