Is there any sort of Initial Start-up Map??
Im having a slight issue with me car. Right when i first start it up.....doesn't matter if its hot or if its the first startup of the day. It will stumble for about a minute, during that period it is extremely hard to get to rev, almost dies it i touch the pedal. I'm just wondering if there is some sort of programmed "initial startup" map that I don't know about. Or does anyone else have ideas or possible know what the problem could be?
Thanks guys. LT-10s/S4 turbo 2 Oh, i forgot to add, after the stumbling period is over it drives just fine. And this current "tune" is from me, im not very experienced, boost cut is also at 0psi. |
Firstly. Move the boost cut to 07psi.(having at 00psi will give you a few drivability problems).
Next. go to opt_mixtrim and add 15% and see if it fixes your problem or makes it worse. if its fixes your problem, your map is too lean. and you need to adjust your opt_aftste add around 5% if it makes it worse. then go to opt_mixtrm and take away -10% and see if it helps. if it does. go to opt_aftste and -5% |
Originally Posted by rx72c
(Post 7314388)
Firstly. Move the boost cut to 07psi.(having at 00psi will give you a few drivability problems).
Originally Posted by rx72c
(Post 7314388)
Next. go to opt_mixtrim and add 15% and see if it fixes your problem or makes it worse. if its fixes your problem, your map is too lean. and you need to adjust your opt_aftste add around 5% if it makes it worse. then go to opt_mixtrm and take away -10% and see if it helps. if it does. go to opt_aftste and -5% |
how did this work out? I'm having a similar problem with my LT8 on an S4 TII. Mine floods out though. Once I get it to start, it runs fine....
Don't mean to threadjack :) my opt_mixtrim is at 0% and I'm not quite sure what to adjust... |
Cant say ive messed with it yet, lol. Elliot arrives in a couple hours so ill let him deal with it. :D
|
well let me know how it turns out. I just made a few adjustments myself and I turned the opt_mix trim back to zero again.....seems ok now. I think my issue may just be spark plugs/wires...
I'm using stocker plugs with 8.5mm MSD wires but I think i'm going to switch back to the stock style wires. I think the larger wires have a harder time delivering spark with stock coils on startup.... :( |
putting the boost cut that high aint gona kill your engine because you control that with your foot.
anyways. to adjust the mix trim feature. Go to the opt_mixtrm feature, then press the RED mode button once. make the adjustment. Then press the RED mode button again. and try it. |
Funk:
On a side note... The mixtrim feature makes adjustments to the whole fuel curve.. If you go to Af_StE (screen 30) this function says "After start enrichment supplies additional fuel for a short period of time after starting the engine to assist with initial engine warm-up and to prevent leaning out as engine conditions normalize." |
yes it does make adjustments to the whole fuel curve. lots of tuners use it to find out if the problem is lean or rich. then pursue the problem further.
|
All times are GMT -5. The time now is 01:08 PM. |
© 2024 MH Sub I, LLC dba Internet Brands