Timing
Melting Slicks
Joined: May 1999
Posts: 2,573
Likes: 0
From: Tewksbury MA
Re: Timing (shftn6)
Timing will depend on a couple of things. It depends what year C5 you have. It depends whether or not there was any detonation. It depends on Intake Air Temp. It depends on allot of things. But if your timing fell @ WOT, I would say detonation and then your timing was pulled by the PCM. But that's just a guess. Timing varies from car to car. It depends on the car mods & type of fuel being used.
I currently see 31 on my 99 C5 @ WOT w/ no detonation.
I currently see 31 on my 99 C5 @ WOT w/ no detonation.
Safety Car
Joined: Jun 2000
Posts: 3,698
Likes: 107
From: Houston TX
Re: Timing (shftn6)
For your engine setup, I'd say that 28+ degrees timing at WOT would be the best. If it is dropping off, you could be getting knock retard (real or false KR). Are you using Autotap to monitor the timing?
Tony
Tony
Thread Starter
Pro
Joined: Jun 2001
Posts: 654
Likes: 0
From: McHenry
Re: Timing (NineBall)
Yes I am using Autotap and I show on all my files to be around 28. I had my car dyno'd on Friday (first time since my H&C install) and it was 290hp. A loss of 25 hp from before my work. The guy running the dyno said my car is losing timing.
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Melting Slicks
Joined: Mar 2001
Posts: 3,263
Likes: 0
From: Austin TX
Re: Timing (C5Noir)
shftn6 had a bad cat, which is what restricted his exhaust and dyno numbers. With gutted cats, we pulled 380 RWHP with stock programming.
It's amazing what a bad cat can do to your horsepower. Something to keep in mind if someone else runs into a problem like this one.
It's amazing what a bad cat can do to your horsepower. Something to keep in mind if someone else runs into a problem like this one.