[expo5.0]

Finally got everything installed on the car and got it on the dyno to see where i stand with things prior to putting the car back in storage. I wanted it done now so that i could get a feel for what parts i would need to order etc. before spring so that i'd know what i'd need/have a budget and plan to have to ready to go come May.

current relevent mods-

hps gen I kit
split second psc1-003 in place of the voltage clamp

Car runs very well in some parts of power band, but "breaks" up and hits some kind of an electronic fuel cut or something in others. Any rpm's over 5k or so are likely to trigger this (most likely due to pegging the maf), also often this happens if you aggressively get into it in the mid range (pegging the maf possibly?).

Additionally, it runs lean throughout the entire rpm range (for my taste). It seems that it is likely the ratio which the 02s are trying to regulate it to. Split second makes a scaler which will allow me to adjust this if i want to (now that i know i'll always be in closed loop) and i may want to go that route.

All that said- the car made very respectable power given the issues and i can definitely see some crazy numbers just around the corner...

my plan (please give me feedback)-

add fuel pressure gauge so i can determine if it is truly the 02s limiting my fuel rather than pump or injectors

buy a new maf sensor (i can get jus the sensor right? part #?) and test it with that installed to see if that fixes the driveability. Also, custom build a larger maf housing such that i'm not pegging the meter quite so easily... Another option here might be to buy a larger meter from an w211 e55 or something (do they share the same sensor plug?) as with the scaler i would be able to adjust that to "fit" what the stock ecu expects to see if necessary.

consider adding split seconds lambda scaler- hopefully, based on the results of more dyno time with the maf issue resolved and the fuel pressure gauge installed.

thanks for any help/advice