91 TSI/AWD

[93gtpeater]

Just do a fuel pump, 550cc injectors, and 2g maf. it will put a smile on your face. Is that exhaust loud?

[bjohn]

Fuel cut has nothing to actually do with a lack of fuel, it happens when the ECU sees too much airflow and it assume the wastegate setup has failed and the car is overboosting. You should get an upgraded fuel pump anyways though. The real fix for fuel cut is to turn it off in the tune, you can do that with DSMLink or an Eprom chip.

Thanks for clearing up that misconception! Makes perfect sense. I'll look into dsmlink after I finish maintenance. Will the 1g MAF read enough air with the 16g @ 15psi? I believe my roommate has a 2g MAF. Also, are the stock injectors able to support that much over factory boost?

Just do a fuel pump, 550cc injectors, and 2g maf. it will put a smile on your face. Is that exhaust loud?

The exhaust sounds really smooth when idling/cruising, the wastegate is pretty loud, so its hard to really tell how loud the exhaust is at WOT.

[blackrosenova400]

I always wondered, how do those fuel cut defenders lie to the computer without any ill efects?

Fuel cut has nothing to actually do with a lack of fuel, it happens when the ECU sees too much airflow and it assume the wastegate setup has failed and the car is overboosting. You should get an upgraded fuel pump anyways though. The real fix for fuel cut is to turn it off in the tune, you can do that with DSMLink or an Eprom chip.

[bjohn]

http://i81.photobucket.com/albums/j207/hairysox33/DSCF0237.jpg
http://i81.photobucket.com/albums/j207/hairysox33/DSCF0240.jpg
http://i81.photobucket.com/albums/j207/hairysox33/DSCF0241.jpg

Got two good front seats form the local pick and pull. Old passengers seat is for sale in good condition, pm me. Lots of carpet interior detailing got the car pretty clean.

[mnnice]

makes me regret buying a bike. i think its time to get back into the dsm game. and its only been a month. looks clean nice pick up. hope it treats you well

[bjohn]

makes me regret buying a bike. i think its time to get back into the dsm game. and its only been a month. looks clean nice pick up. hope it treats you well

Get another one! I've seen a couple good AWD 1g projects in the cities for a decent price.


Next up is brakes. The rear brakes are starting to wear out, the e-brake cable doesn't work either. Maybe there is a good, reasonably priced upgrade I can do to do while I'm at it?

Suggestions?

[Shane@DBPerformance]

I always wondered, how do those fuel cut defenders lie to the computer without any ill efects?

On cars like a Toyota Supra or MR2, they have a MAP sensor and a MAF. The MAF is used for primary fueling, ignition timing, load cal, etc. The MAP sensor is just used for stuff like reading boost and checking to see if EGR is working, so devices like the HKS FCD just clamp the max voltage going from the sensor to the ECU at a voltage right below fuel cut would hit. The MAF still reads and adds fueling.

On a car like an SRT that uses the MAP sensor for everything, if you clamp it at say 13psi to avoid hitting 15psi fuel cut, then it will start leaning out when it goes above the clamped voltage/boost level.

On a DSM that only has a MAS for eveything, it will start leaning out above whatever airflow they clamp the signal to the ECU at. It's a hack... Most people used to get around fuel cut on DSMs by putting in too big of injectors and lowering the reported airflow to the ECU via a piggyback like the SAFC. There is no reason you need 550s with a T25, 14B or 16G on your typical pump gas gas, except to be able to fool the ECU away from fuel cut.

So there can be ill effects.