start-up issues since new build install...
this is after ALOT of idle tuning...

LS1, Procharger P1SC, Patriot Stage III heads,
218/230 .605”/.604” 112LSA +3, longtubes

mornings...fires up on first turn over and usually catches itself and idles...
however, after several minutes of warming up @ idle, putting it in gear its fine but usually cuts off when I turn the wheel to exit the driveway...

rest of the day it MAY fire up on first turn over but will not catch itself and idle...
sometimes on the 3rd or 4th attempt it will catch if I don't decide to go ahead and pedal it...

if I pedal it for a little while, it idles fine...still wants to cut off when I start to leave the parking space though...this is after noticeably going into closed loop...

once I'm on the road...its all good...morning, noon or night...

tried adding more air at start-up...worked for a day or so...
tried adding a couple seconds to delay @ start-up...worked for a few starts, then right back to same issues after driving 15-20 minutes, parking and attempting to restart about 30 minutes later...

only SES code active is TPS performance range...I assume this is due to idle screw adjustments made during idle tuning...could this also be my catching @ start-up issue as well?

what specifically to I need to be looking at?
thanks in advance!

 

Got a tune you post up?

 

I left the laptop @ home...I'll post it up @ lunch...
thanks

 

Did you do the RAFPN and RAFIG process to B4307?

 

no...

current tune...a work in progress...

 

Check out this thread on the RAFIG and RAFPN process...

http://forum.efilive.com/showthread....ighlight=RAFIG

This will help if you having problems at idle (0mph), if your having problems with rolling idle (> 0 Tps%), I would look into adjusting B4309.... Adding to much to that table will give a "Cruise Control" effect, too little and it will stumble when rolling and off the gas...

 

your spark table looks weird to me

maybe cause im a tuning noob

 

thanks...will do...

not more noob than me, I guarantee you!

 

No problem, I am not saying that is your problem but it should help... Also you might want to change B5932 (base spark in gear) to 26.5 or put that table back to stock and just put 26.5 in the idle regions...... I am not sure why the entire table is the same value, but..... I found that you need to have your timing the same in all 4 spark tables in the idle regions.... That way your timing is not jumping around alot.... Just my opinion...

 

I'll look at those...thanks!

As of yesterday...I have a hesitation @ WOT...meaning...
when I mash the pedal to the floor...instead of it going WOT, it hesitates for a couple seconds...then goes WOT...
This has never happened before...where should I look?