Quote from: cobracmdr on May 12, 2008, 08:25:04 AM

Quote from: flybynite on May 05, 2008, 04:00:09 PM

Quote from: 93White3400Z on May 05, 2008, 10:16:32 AM
I tried both 34.5 and 37.5 injector flow rate and it didnt do anything  :icon_mad: :icon_frown: Not sure what to do now  :icon_cry:

It made no difference. A change that major should have done something. What was the Afr at idle before the changes and after? What ecu(xdf for tunerpro) are you using?

Adam maybe he is having the same problem we had last friday where the idle fuel is based on EGR position?  I had no EGR so we had to change it to run off of the injector flow rate.  Before Adam did this we made huge changes to the injector flow rate with no response......and I was 10.5 to 1 at idle.  If your egr is deleted this could be your problem.

My egr is deleted. Care to explain a little more ? What did you do to fix it ? I bought a megasquirt but I'm still not sure I want to use it  :icon_lol:

I tried both 34.5 and 37.5 injector flow rate and it didnt do anything  :icon_mad: :icon_frown: Not sure what to do now  :icon_cry:

Oh and while I'm thinking about it, you put it at 34.5 but I guess you have the 39psi fuel pressure at idle ? I have 49psi fuel pressure so my injector are around 31lbs at 49psi so I would put my constant at like 37.5 (34.5+(31-28)) ?

Nice, thats exactly what I wanted to know  :icon_biggrin: I will increase the injector flow rate constant  :icon_wink: Would you be interested in sending me your bin file since we have a very similar setup even if I have a 3400. AE and decel enleament and everything should be close from what I need. that would really help if you could send it to me.

Thanks!  :icon_biggrin:

Quote from: flybynite on May 04, 2008, 06:33:36 AM

Quote from: 93White3400Z on May 03, 2008, 11:50:24 PM
So yeah, I'm sure I'm not the only one in this situation. With bigger injectors then stock, it cause a rich condition at idle which make the engine run crappy. BLM and INT are at 128 and my wideband show 14.7 but I know it's crazy rich because the odor of gas is there for sure  :icon_lol: and i even got knock sometime.

I've heard what can cause something like that is the too large BPW (Base Pulse Width) at idle because of the larger injectors (28lbs instead of the stock 22). My question is where is that BPW that I could change (lower at idle) to make my engine run better ? If anyone have an address for the BPW table or something that could correct BPW, that would be awesome.

Btw, thats on a turbo 3400 in a 93 z24 but it shouldnt matter, my problem is chip related and i'm using 8F.

Thanks to anyone that want to help  :icon_wink:

Set the injector flow rate to 34.5lbs. Then start removing fuel at idle rpms in the base ve vs rpm table located at 07AF. Once idle is fine start working up to 3k. When you have that done work on 3k-6k and you should be fine... If your BLM is 128 and your INT is 128 at idle you should have an AFR of 17 to 1...Good Luck
Adam

where the 34.5 came from ? and what do I need to set the injector rate per single fire to ?

What injector did you have in your TGP ? Any surge ?

So yeah, I'm sure I'm not the only one in this situation. With bigger injectors then stock, it cause a rich condition at idle which make the engine run crappy. BLM and INT are at 128 and my wideband show 14.7 but I know it's crazy rich because the odor of gas is there for sure  :icon_lol: and i even got knock sometime.

I've heard what can cause something like that is the too large BPW (Base Pulse Width) at idle because of the larger injectors (28lbs instead of the stock 22). My question is where is that BPW that I could change (lower at idle) to make my engine run better ? If anyone have an address for the BPW table or something that could correct BPW, that would be awesome.

Btw, thats on a turbo 3400 in a 93 z24 but it shouldnt matter, my problem is chip related and i'm using 8F.

Thanks to anyone that want to help  :icon_wink: