boost spikes with a test pipe
Thread Starter
Full Member
Joined: Feb 2003
Posts: 164
Likes: 0
From: Los Angeles, CA
boost spikes with a test pipe
has anyone experienced any bad boost spikes by changing their main cat? is this really bad? I just bought an fd with a test pipe and a catback along wiht reliablity mods but should i change the testippe back to the main cat? i just wanta keep things on the safe side...also, im running stock boost right now...
Lives on the Forum
Joined: Dec 2001
Posts: 14,716
Likes: 10
From: San Lorenzo, California
We don't use the term "test pipe" here..
I thought you posted you had a downpipe before? Is your main cat removed as well?
The stock FD exhaust is pre-cat, main cat, and cat-back. The pre-cat is replaced with a "downpipe". The main cat is replaced with a hi-flow cat or a "midpipe". The cat-back is replaced with a...cat-back!
If you are on the stock ecu, you definitely do not want to be running a midpipe, but a downpipe is just fine.
I thought you posted you had a downpipe before? Is your main cat removed as well?
The stock FD exhaust is pre-cat, main cat, and cat-back. The pre-cat is replaced with a "downpipe". The main cat is replaced with a hi-flow cat or a "midpipe". The cat-back is replaced with a...cat-back!
If you are on the stock ecu, you definitely do not want to be running a midpipe, but a downpipe is just fine.
Thread Starter
Full Member
Joined: Feb 2003
Posts: 164
Likes: 0
From: Los Angeles, CA
sorry, new to the roptary lingo but yeah i have a dp, midpipe and catback...im gonna take your advice and put on a cat asap...so since i changed my catback i should upgrade my ecu?? sorry guys for all the threads but im new to this.
Dont like it? I dont care
Joined: Jan 2003
Posts: 931
Likes: 0
From: Gold's Gym
Well, when you typically do more than two mods to the intake and exhaust you're going to experience boost creep. The wastegates on the stock turbos can't bleed off the boost quick enough so this is what causes the spike when the airflow is opened up. The spike usually isn't much, but it's sometimes enough to cause a lean condition and blow the motor. By upgrading the ECU you run less of a chance of this as the fuel maps are beefed up and you're supplied more fuel to prevent a lean condition.
Dont like it? I dont care
Joined: Jan 2003
Posts: 931
Likes: 0
From: Gold's Gym
Originally posted by RotaryMaybe
also, since im running the stock ecu, should i change the midpipe to a main the main cat or a highflow cat? whichever is safer ill go....
also, since im running the stock ecu, should i change the midpipe to a main the main cat or a highflow cat? whichever is safer ill go....
Trending Topics
Thread
Thread Starter
Forum
Replies
Last Post