johndirty

The car surges so hard at idle that I have to give it gas to run, but its surging so hard that it hits on the converter and tries to take off??


its a 6.0 LQ4
Cam is 231/239
-lobe separation 115
-intake centerline 112
-valve lift @1.7 is .640/.629
78mm turbo setup
80LB Dekas
3800 stall non lock up
th400 full manual
3 BAR OS
Base Fuel PSI is 55PSI roughly on the gauge.

subeone

iTrader: (5)

use this, see how it works.

johndirty

Awesome thanks! ill load it up in the morning.

johndirty

ok, i loaded the file and started it, it still tries to surge. I'm attaching the scan as I started it...

subeone

iTrader: (5)

its probably surging so bad because of your map sensor is only reading 10 kpa.. and your LTFT are 25% positive.. what map sensor are you using?

johndirty

I'm using the "EFISource 3 BAR... I did see that it only shows 10kpa no matter what throttle setting or boost psi it has... that's odd


http://www.efisource.com/shop/ls1-st...ar-map-sensor/

johndirty

any idea what would cause this? Bad sensor?

johndirty

Big thanks owed to you my friend... started investigating the wiring and pulled the plug off of the map sensor and found a pin was bent up and around its female counter part... got it straightened out and boom car is registering normal map pressure and idles like a champion! Thanks for the quick responses!

G Atsma

ANOTHER LS1Tech feel-good story! Gotta love it!

LLave

iTrader: (3)

Hah, I was thinking the same thing. How cool is that? There should be a "buy that man a beer" button.

G Atsma

Or a case! lol

subeone

iTrader: (5)

glad you figured it out. now time to make some power.