Hmm, everything sounds ok to me, puzzler.. - Saab Performance Bulletin Board - Saabnet.com
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Hmm, everything sounds ok to me, puzzler..
Posted by Aaron Gilbert [Email] (more from Aaron Gilbert) on Thu, 9 May 2002 11:48:54
In Reply to: Re: Few things..., Chad B, Thu, 9 May 2002 11:34:37
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Are you actually hearing pinging, or does the APC just cut boost back once it hits 15 psi?
With that much retard under boost, you definitely shouldn't have any pinging, especially with the fuel pressure you are running, which is almost identical to what my Trent RRFPR is set at. I only have my car set to retard to 10 degrees however, same distributor mod that you have.
When I mistakenly set my base timing at 16 degrees, thus boost retard at 6 degrees, the car would hold 21 psi no problem, and 22-23 on nights as cold as you describe. That four degrees makes a huge difference in my car..
Anyhow, your A/F ratio per the dyno sounds just fine. One thing I do notice on my car however, was that sometimes if I nail it when near/above the torque peak, boost will max out extremely fast, and the APC will kick it back. Whereas, if I go WOT from say 2000 rpm, thus let the boost build slowly, boost will peak at 2700 rpm or so, and hold there. I just made another APC adjust last night, so I hope to have the problem fixed, albeit with a lower max boost..
Good luck tracking down the problem!
Aaron Gilbert
1987 9000T 274k miles
posted by 205.215.216...
Posts in this Thread:
- Lots of gas,too much timing and still knocking at 15psi, Chad B, Thu, 9 May 2002 10:50:46
- carbon?, MS, Fri, 10 May 2002 04:15:00
- Re: Lots of gas,too much timing and still knocking at 15psi, Kevin K
, Thu, 9 May 2002 14:07:30 - Re: Lots of gas,too much timing and still knocking at 15psi, Brad, Thu, 9 May 2002 11:57:17
- Few things..., Eric Law, Thu, 9 May 2002 11:14:35
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