raza21_84

Recently flashed this rom to get rid of my MAF. AFR is good on full throttle. Runs lean on idle and part throttle. Turned closed loop on. AFR stabilized. On part or full throttle around 2.5k rpm goes lean and back to normal for a sec. Is that the jitters people on about?. New to SD so might need help setting it up. what do I need to change coming from a MAF 9055 V7 rom

todd6027

iTrader: (10)

try assynch v tps delta its opposite of this thread, im running that rom at the min no jitters

https://www.evolutionm.net/forums/ec...-question.html

raza21_84

What's involved putting 8 ecu in my 7. My aircon stays on. Fuel wont work. 02 sensor heater fault once started.

todd6027

iTrader: (10)

swap 8 and 22 , 4 plug 8 ecu is prob from an 8 260 so you need to turn off the rear o2

wreckleford

iTrader: (2)

Hopefully he will believe you, because he doesn't believe me LOL!

todd6027

iTrader: (10)

maybe

raza21_84

This is a weird one. So I had to change my 7 ecu. Someone sold me an 8 ecu instead. So I changed the 2 pins around to get the car running. The code p0135 heater circuit keeps coming up. I'm using rom 90552701-v7. same one I was using on my 7 ECU. I turned the rear o2 off. I look for everything I can through the rom. nothing helped. so I checked sensor resistance. Reading 14ohms. Ecu was grounding the heater circuit the heater but fault still there. I changed the sensor. The code still come up. Flashed it with rom 96532706-TephraMod. it does not come up anymore. Running fine. I don't get it.

todd6027

iTrader: (10)

you can turn off the front o2 heater cel using bit 14 periphery 0 faa bits

raza21_84

If I do that, I get random afr reading on close loop. Plus the drive is horrible. Do you guys know any good E8 Roms. Am using one now. It picks up random knock reducing my timing sometimes and would give me MDP code randomly

burgers22

Make sure you have the ROM with the WGDC fixes under the Misc tephra mods.

jameswwt

Hi could anyone here advise why theres is no IAT Scaling table for this Rom?

Lastly, does this 90556701 Rom got Live tuning features?

Thanks

3gturbo

iTrader: (4)

Ya and then you break multiple things in the rom like fuel trims. Your better off using the 965 series roms that dont have those issues.

jameswwt

Hi anyone to advise?

Thanks

todd6027

iTrader: (10)

speed density programming section , last entry

SD IAT ADC scaling (Insert MAT Sensor Scaling)

todd6027

iTrader: (10)

nope