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the o2 sim we used has a switch when the car is in vacum the front o2 sensor is doing it job, and the car is making trims to the fuel tables. when the car goes out of vacum the switch is triggerd, and a constant voltage is then seen by the ECU... this allows us to use the greddy to make changes...

CORRECT! you get the idea..

you guys are getting yourselfs all confused.... you do need to use a resistor to lower the voltage on the MAF. your going to need the o2 sim with pressure switch to stop the ecu from adapting while only in boost... and imho youll need greedy pressure sensor to accuretly add fuel in boost. this...

your going to need an O2 simultaor with a pressure switch so it only trips it when you are in boost. I am 99% sure it goes on the front O2 bank, as the rear, after the cat is only for emissions... honestly just get the one orangezoom got. it comes with instructions...

well, I was the one tuning the car... it made 200whp and 200tq consitently on the dyno.. we played with the way the boost hit and had a few 210ish pulls but the mid range sufferd... when they dyno plots are posted youll see what I mean. the greddy and injectors gave us about 20 hp and 30 tq...

already said we are going to try this... look back and youll see it.. parts where orderd today.... ill keep you guys updated..

so basically this car is in the suck... ugh.... what about bigger injectors? im thinking thats going to be a nightmare id rather not see.

so your saying its normal for the car to dump fuel when it goes from closed to open loop. how retarded... in all honesty it sounds like the VW 1.8ts when you go above a certain boost level it goes into limp mode.. dump fuels, and limits you to 3psi... I was planning to clamp the MAF using the...

an fmu does nothing to alter the duty cylce of an injector so it would never make it go 100% duty cyle.. unless you push to much pressure thought it and it goes static but with a 4:1 at 8 psi I dont think thats happening. what it does do is put more fuel in per inject pulse. honestly I think...

I have had similar problems in my audi. it is very sensative to octane, whenever i get bad gas I buy a gallon of toulene, its about 114 octane, to figure out your final octane rating use this formula x = total capacity y = octane z= total octane (1/x * 114) + ( x-1/x * Y) = z

yep, I am the guy that is trying to tune the car, but no, I did not hook up the greddy emanage.. that would be Dave at liberty in naples.. anywho.. why does the pcm go to open loop? does it sence to much voltage from the maf? or is it tryin to protect itself from going to lean? also in the...

we spent about 6 hours on the dyno yesterday and had horrible results. we could not get one back to back run. car has hard pipes, greddy boost controller, greddy emanage, 4:1 vortech FMU and a 3 inch turbo back exhuast. made 196 at 8psi but the A/F was to high at about 12.5 out the back the...