*2G* new to MAFT, Need some experianced help

[98spydert]

I posted this at the full throttle tech forums but just in case there's some that can offer some pointers and doesn't read over there, I'll cut and paste over here:

I just got my MAFT completly installed yesterday with a Dejon Tool blow-thru pipe. My exsisting set up was FIC 650cc injectors, keydiver chip to compensate, and FTS&S bolt on AFPR.

I went from a stock MAF, stock injectors, and walbro 190 to 650s and the chip alone a few days before. The car ran rich so a day later I slapped on the AFPR and turned the pressure down to 40 psi. The car ran great after that, just like stock. This is all on the T25 because I want to get the MAFT running perfect(or close anyways) before I stick on my E316G.

I installed the MAFT in blow-thru with a custom intake and venting a Type S(it's way too loud, I'll be going back to recirc). I hooked the white wire to pin 4 on the power transister and I'm using a 3 inch GM MAF.

I started the car for the first time using the setting for 450cc injectors and all dip switches off. The car started but idled like crap I put the fuel pressure up to base 42 and set the base MAFT dial one click rich to the 440cc setting. The car idled a little better so I took it for a drive today. The whole time cruising in 5th going about 60mph the STFT said 12-15 and the LFTF said 0. I took it back and set the MAFT for 430cc injectors but nothing really happened as far as the trims after waiting a while. Then I set the fuel to 45psi and took if for a drive again. This sime the stft said 10-12 and the ltft said 12 and didn't move while going 50-60mph in fifth.

It seems that most of the threads I read are on 1Gs and it's hard to find anyone experienced with 2Gs and the MAFT. Hopefully someone can give me some pointers on what to look for and change with these positive trims. Thanks.


BTW, I'm on the 2.01 chip and left the screen in the MAF.

Another BTW just so there's not confusion; the chip is set up for global compensation and dead time for FIC 650cc injectors and I have the knock gauge conversion. That's all I can think of that's relevant here.

 

[98spydert]

OK, started over at 43psi base fuel pressure, aux4 base2, the rest zeroed out. Reset the ECU, started the car and STFT climbed up to 17, LTFT didn't move yet from 0 and O2 were .01-.03. Air flow read .37.

I adjusted the base two clicks lean(as low as I can go). The STFT went to 5 and airflow went to .44. O2v stayed the same.

I adjusted the idle knob a click rich, then nothing happened for about 5 minutes at idle so I did it again, one more click rich. Nothing. Am I just not waiting long enough to see a change? If it's dead at 5 I figured one click is 5% and it would be dead on or pretty damn close to zero for the LTFT.

 

[Lucky13]

I don't own a 2G.... but I'll offer my ( little ) experience. I also have 650 injectors and at the moment also have mine 2 clicks lean at the base setting. Any changes I've made to idle while the car was running can be seen on my logger within a minute or two if the car is fully warmed up.

 

[98spydert]

Well I started over with 3.5" dip switch settings and a fresh base. It was pig rich rather than super lean so I'm 3 clicks lean on the base and 1 at idle. Mid is +1 and WOT is zereod. I'm trying to slowly get rid of the partial throttle knock. It's a pain and makes the car drive like ass. I'm slowly getting the hang of it though.