Hey guys I got bored and made a graph through excel that shows your boost to rpm. I was bored and wanted to see how much boost i was loosing through the rpm range. Well here you go, if you would like a copy pm me and ill send it to you. I dont know how to post it.
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Mods: Maddog STS w/bushings, Solid MM, PTP WGA (20PSI) , CAI, 3" Downpipe, 3" Custom Side Exit Exhaust, Stage1, AGP Fuel Return Kit, BFMIC, Hot and Coldside piping, Turbonetics BOV, Perrin BOP, Rage-Tek Custom Tune.
your factory map sensor only will read psi to 18.5 psi technically. thats why the stage 2 kit brings a new map sensor which will let the computer see pass 18.5 psi.
but brian at diablo said it can safely read pass 18.5 up to max 23 psi i think was what he said. theres a thread floating around with that information.
to answer your question the correct reading is from your mech. boost gauge.
your factory map sensor only will read psi to 18.5 psi technically. thats why the stage 2 kit brings a new map sensor which will let the computer see pass 18.5 psi.
but brian at diablo said it can safely read pass 18.5 up to max 23 psi i think was what he said. theres a thread floating around with that information.
to answer your question the correct reading is from your mech. boost gauge.
are you on stock sensors??? what are your mods for running 21Psi?
all my mods are in my sig. The last time I ran at the track was on street tires and without a tune. When I plugged up my wideband my AFR's were in the 14's (which I had been running for about 2 years). Well with that I ran a 13.3 at 107. Now I have adjusted my fuel and run 11.5-11.9 to redline with 0 knock and my exh temps are around 1500 according to the diablo. What do you guys think I will run now with a good race gas tune, 101 OCT, and drag radails. Im thinking mid to high 12's.
are you on stock sensors??? what are your mods for running 21Psi?
yes im on stock sensors, which i have though about changing but was told its pointless if you have the stock turbo. My goal is to make my car as fast as possible with the stock turbo.
all my mods are in my sig. The last time I ran at the track was on street tires and without a tune. When I plugged up my wideband my AFR's were in the 14's (which I had been running for about 2 years). Well with that I ran a 13.3 at 107. Now I have adjusted my fuel and run 11.5-11.9 to redline with 0 knock and my exh temps are around 1500 according to the diablo. What do you guys think I will run now with a good race gas tune, 101 OCT, and drag radails. Im thinking mid to high 12's.
There is no way your car ran that lean with a stock tune!.!.!.. the stock tune would pull timing and make the fuel rich as hell. Where is your wideband at in the exhaust?
Id say youd be in the 12's with a good hook from the radials..
There is no way your car ran that lean with a stock tune!.!.!.. the stock tune would pull timing and make the fuel rich as hell. Where is your wideband at in the exhaust?
Id say youd be in the 12's with a good hook from the radials..
Actually now that I think about it I installed my 93PERF Tune before I installed my wideband so I never saw what my stock AFR's were. So I guess I was only running that lean for about a week. Not so bad. So I was running lean with the 93 tune which seems pretty common from all the threads.
also I have been running a fuel return kit for about a year or so and about 2 weeks ago i finally hooked it up to a boost source. Before that I couldnt get my AFR's below 13 no matter how much fuel I added. Once I hooked my FPR to a boost source my AFR's were 10x better all the way to redline.
Actually now that I think about it I installed my 93PERF Tune before I installed my wideband so I never saw what my stock AFR's were. So I guess I was only running that lean for about a week. Not so bad. So I was running lean with the 93 tune which seems pretty common from all the threads.
well you cannot blame the tune for making everyone run lean, that tune is intended for near stock cars.. Many people are running full bolt ons and much higher boost and wonder why the 93perf tune runs so lean...
Quote: Originally Posted by jthomas123
also I have been running a fuel return kit for about a year or so and about 2 weeks ago i finally hooked it up to a boost source. Before that I couldnt get my AFR's below 13 no matter how much fuel I added. Once I hooked my FPR to a boost source my AFR's were 10x better all the way to redline.
well thats just user error. not having something set up the correct way. At least now everything is fixed..
Ehhh the boost cut has been "adjusted" Basically what I did was raise it to what the sensor should be able to do without the baro calculation as if the sensor was only reading stright boost...
It recommended although not required... I've had plenty of people pushing up to 25psi...
Quote: Originally Posted by Mindmelt101
well just for instance... convert 2.25BAR to PSI and what do you get? 32.63349 psi... Basically it will take a little away from the bottom to give more at the top... This would normally be a problem but since assuming your injectors are calibrated correctly and the stock PCM only uses the low side for shooting for 14.62 AFR and not a 3d map it's not a problem... I'm not saying push that high but you asked.
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rpm to boost graph
Linear Mode
