cold start tuning

[smug]

My car has an xp cam. ic, gen v, with the north star throttle body and the rpms bounce between 700 and 1700 on a cold start and eventually settle down. What do I need to look that to make it idle better on a cold start?


MAF?

Click to read more...

 

[10sec]

Raise cold start idle so it doesn't surge like that, and raise OL enable to 110-120* so the oxygen sensor can't tell the computer what to do until the motor is warmed up. My blue car did this until i raised the idle. Once it starts searching though, it's an endless battle until it decides to either die or idle normal. Pain in the ass.

 

[Eagle]

Do 3800's have Idle Airflow (RAF) tables that could be used to manage this a bit?

 

[smug]

wtf is OL enable?

Is that a HPT only table?

 

[smug]

Do 3800's have Idle Airflow (RAF) tables that could be used to manage this a bit?

not that I know of

 

[10sec]

It's the temperature of the engine the computer is ok with turning on the o2 sensors at. And Eagle, i wish we had tables to control things like that, our only option is pretty much just a bandaid or getting REALLY good factory o2 sensors. Anything aftermarket is just junk. Even ac delco aftermarket. A good low mile sensor will do wonders for idling.

 

[TommyGloves]

wtf is OL enable?

Is that a HPT only table?

OL = Open Loop. You can increase the time before the PCM switches to Closed Loop.

Do 3800's have Idle Airflow (RAF) tables that could be used to manage this a bit?

Yes...but not in HPT. Gotta use TinyTuner and hope they are mapped (IAC section).

I don't have access to my tuner crap at the moment so I can't be more specific.

 

[10sec]

Tommy, could you per chance make these changes for me one day when we see each other with the tiny tuner? I love hpt, but the tables you guys get vs the ones we do blows balls sometimes. My blue car is really pissing me off with the idle problem i have. It doesn't go to commanded idle unless it's stopped, if i'm moving and let off the throttle it goes to like 500rpm and either dies or almost dies, but as soon as i stop, BAM, commanded idle. Fucking pisses me off.

 

[Turbocharged400sbc]

there's iac airflow per step thats a base iac table in tinytuner...enlarge the number ~20% since the N* uses the 12mm iac pintle vs the L67 tb 10mm pintle

DHP>HPT

 

[MuffHugger]

Brick on the gas pedal

 

[smug]

jesus i have forgotten a lot of stuff

 

[Turbocharged400sbc]

no different than what ya forgot during summer break

 

[10sec]

Dan, check your thread on CGP. Oak knows his shit. Helped me out on a couple occasions.

 

[TommyGloves]

Tommy, could you per chance make these changes for me one day when we see each other with the tiny tuner? I love hpt, but the tables you guys get vs the ones we do blows balls sometimes. My blue car is really pissing me off with the idle problem i have. It doesn't go to commanded idle unless it's stopped, if i'm moving and let off the throttle it goes to like 500rpm and either dies or almost dies, but as soon as i stop, BAM, commanded idle. Fucking pisses me off.

Sure...you bring the propeller hats and pocket protectors.

 

[TommyGloves]

there's iac airflow per step thats a base iac table in tinytuner...enlarge the number ~20% since the N* uses the 12mm iac pintle vs the L67 tb 10mm pintle

DHP>HPT

Yeah...there are a bunch of IAC tables that I need to get familiar with myself.

 

[PANDA]

Do you have 04/05 timing tables? My car would idle all crazy from a cold start with them.

 

[Handsome Jesus]

I'd say that IAC airflow thing would be good to look into... that would make sense for my car as well. Since switching back to stock timing tables and gasoline the car starts and idles way better than it did, but it does feel like there is still an IAC error of some sort just after it fires. surges maybe once or twice. but thats it.

 

[The Broken Regal]

Do you have 04/05 timing tables? My car would idle all crazy from a cold start with them.

I was going to say this x2... the idle timing for the 04+ timing tables is jacked up and i had to change mine as well... now its all good, until the car gets hot

 

[Turbocharged400sbc]

Yeah...there are a bunch of IAC tables that I need to get familiar with myself.

schlim +1, tommygun -1

 

[TommyGloves]

I was going to say this x2... the idle timing for the 04+ timing tables is jacked up and i had to change mine as well... now its all good

:jerkit:

 

[Turbocharged400sbc]

 

[smug]

04 GTP timing table

 

[The Broken Regal]

BOOM.. SUCK ON THAT TOMMY GLOVES!

 

[PANDA]

shoot me a email address I can email u my bin. import my tables and see if car idles better.

 

[10sec]

Lemme get some of that too