Maf-t tuning problem.

[aerodsm]

Ok so I have a 1990 eagle talon awd.
1000cc RC injectors.
Td05h turbo at 20psi.
Non EPROM ecu.
3.5 gm maf.
An I believe a v2 maf translator.
Narrow band a/f gauge.
Walburo 255 fuel pump.
Egt gauge 8" from the turbo.
Hks fuel cut defencer.

Here is the problem, I cannot go over half throttle because the car goes lean
If in 4th gear @ 30 mph @ wot car stays rich until it reaches 10psi
Then goes lean an breaks up.
I have a cel that comes on after 5-15 min of the car running.
I have searched everywhere but nothing that helps. Any ideas people

 

[Cdc1221]

Those injectors are way too big to tune with a maft. The absolute biggest you can tune for is 650s with that. Your ecu is trying to run thinking its only getting 40% of its normal airflow for a given load and throttle position. Plus, you are trying to tune with a nb o2, which is like trying to f#@k with the tip of your d#@k. You need a wideband to get your actual afrs. Turn your boost down and get some stock injectors until you get a real tuning solution, then try to tune using injector scaling with those 1000ccs

 

[92AWDHX40]

Get smaller injectors or grab link lite and get a wideband the narrow band wont help you with anything just blink, grab the right stuff to tune with and youll be fine. For a way to start tuning.

 

[triston2469]

Actually I have to disagree with the smaller injectors. I have the manual in right here and according to the manual you can run up to 1030 cc injectors on a 2g and still be able to tune it with the MAF-T

 

[Cdc1221]

Yes, it has the adjustment capability. But, the ecu will add ridiculous amounts of timing because it will move closer to the top of the timing table. If you have a way to control timing advance, then yes, technically you could with lesser ill effects. But the maft is a poor excuse for a tuning solution anyway.