zblubyu

i just had a 408 stoker put in my zo6 and we did the fast 102 intake with the 92mm tb. this may just be a tuning issue but i cant get it to idle vary well. it wants to surge at idle. what might this be?

DrkPhx

iTrader: (15)

More than likely a tune issue. Has it been tuned at all?

zblubyu

it has a break in tune on it. the lowest we could get it to idle is 1,100 rpm any lower it wouldnt idle without shutting off when letting of the throttle on a roll

DrkPhx

iTrader: (15)

That's real high even for a big cam. The tune needs work. What size cam?

98hc4mula

iTrader: (5)

That is pretty high idle, I got my 408 idling at 825 rpm with a 244/244/ .610 113+3 cam it drives so nice due to countless of hours tuning it. Have the tuner work on it some more. and some more.

RyanSws6

iTrader: (72)

I've had tunning issues about idle. I've had several tunners TRY! It pisses me off to drive it sometimes. WOT is like sex but slowing down a PITA. I think its a throttle cracker issue, seems to run too rich. I've heard my 102 TB is too big..etc...I'm considering going SD. I just can't keep throwing money at tunners. I'm going to try a BIG rice tunner. We'll see. Oh I did check EVERYTHING for air leaks and re tq'd the intake.

I would tell you to check for air leaks.

Sales1@Texas-speed

Assuming that everything is installed correctly it definitely sounds like a little more time needs to be spent finalizing the tune.

macca33

Look at the Desired Airflow, Base Timing / Timing table, Commanded AFRs, etc, etc... It probably needs more idle airflow, at the very least.

cheers