Need Help w/Tuning & Boost - Saab Performance Bulletin Board - Saabnet.com
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Need Help w/Tuning & Boost
Posted by DanF (more from DanF) on Tue, 31 Oct 2000 19:09:18
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Hi guys,
It's been some time since I've posted anything because I've been trying to sort out a problem with what turned out to be my AMM. Problem I'm having is getting the boost I'd expected after having done the mods I've done. I can only get to about 1/4 into the red and I get a severe flat spot (valve float?) at about 5500 rpm).The car has the following; RRFPR, ported/polished heads/intake/exhaust, T3/T4 hybrid turbo, 9000 clutch, 28# injectors and a K&N filter on the AMM, stock IC and cast pipes, 2 1/4" exhaust. I've also done the mods to the APC (to the R42 & 138 resistors) and adjusted the pots per Kevin K's recommendations, and will eventually do the MSD BTM and possibly new cams when the budget allows. While the car is fast (tops out at 225km/h and nice grunt from 3800 to 5500 rpm) I don't think I'm getting anywhere near the 18psi that I want. I plan on setting the base boost higher but suspect that the pressure transducer will defeat this. Have I done all I can or should I seek out a tuner to massage things?
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