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Not sure, somewhere between 15-20 psi. :)
Posted by Aaron Gilbert [Email] (more from Aaron Gilbert) on Sat, 4 Aug 2001 21:59:42
In Reply to: how much boost? thanks for posting some results...nm:-), steveC inBC, Sat, 4 Aug 2001 21:32:27
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I was too busy hanging on and watching the fuel pressure gauge plus the tachometer.. No time to watch boost! :) It's on video though, so if our group videographer gets going and gives us a tape, I can tell you. On the open road it usually hits 18-19 psi and stays, or sometimes cuts back to about 15 (but no pinging) depending on temperature and RPM.
As for the AID, no, I do not have that on my car. I do have a modified distributor advance/retard diaphragm assembly, not sure what exactly was done with it, but know that it does not retard as much as the AID (designed to retard to I think 10-11 degrees at boost). I did my runs with timing set to 16 degrees BTDC though, so it's quite conceivable that I could get more power by setting it to 20 as recommended... No biggie, I'm quite happy with the results and have no desire to push it past the 200 HP mark at the wheels.
The Trent Saab/Malpassi Rising Rate fuel pressure regulator is indeed that! It dropped down a hair at the highest RPM, but it went from 50 psi (3.4 bar) at idle up to 70 psi (4.7 bar) at WOT. So, not a 1:1.7 ratio, more like 1:1.4, but still good! Especially for only about $150.
I'll try timing at 20 degrees BTDC, see how it goes. I may get some pinging, or may not - just in the nick of time last night I determined that my throttle switch was not working. It never would close the contacts at WOT, so it was still trying to control the mixture. Put in a good used one and things seem much better at WOT (DUH!). So maybe I'm good to go for 20 degrees without ping...
Aaron
posted by 207.202.177.103
Posts in this Thread:
- SCS Dyno Day results! (mine anyhow) :), Aaron Gilbert, Sat, 4 Aug 2001 21:04:04
- air/fuel ratio??, dave n, Sun, 5 Aug 2001 10:14:04
- It's the bottom line, funky I know...ChrisX and Kooch similar.., Aaron Gilbert, Sun, 5 Aug 2001 10:32:14
- wide band 02 sensor?, Kevin K
, Sun, 5 Aug 2001 14:51:52- Map sensor Variable frequency output?, Lee, Mon, 6 Aug 2001 14:16:57
- Yes, this was the shop's wideband O2 sensor.., Aaron Gilbert, Sun, 5 Aug 2001 22:19:20
- not ignored, it's expensive, dave n, Sun, 5 Aug 2001 19:54:51
- oh, maybe you're on to something., dave n, Sun, 5 Aug 2001 10:45:02
- Re: SCS Dyno Day results! (mine anyhow) :), chrisx, Sat, 4 Aug 2001 22:45:33
- how much boost? thanks for posting some results...nm:-), steveC inBC, Sat, 4 Aug 2001 21:32:27
- SteveC in BC. Come down and join us next time! N/M, Gregg C., Sun, 5 Aug 2001 03:52:14
- Re: how much boost? thanks for posting some results...nm:-), Gregg C, Sun, 5 Aug 2001 03:50:56
- Not sure, somewhere between 15-20 psi. :), Aaron Gilbert, Sat, 4 Aug 2001 21:59:42 <-- Viewing This Message
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