TravisA

Anyone else with a supercharged setup ever have any problems w/ surging at low rpm's with little or no throttle applied?

Car has Procharger setup, stock heads, 218/230 cam and forged 355 bottom end with speed pro blower pistons if this helps.

Thanks just wondering if someone has had a similar problem and can point me in the right direction.

Travis

Wild1

I've heard about that... I've heard two results:
1 - programming
2 - MAF location

TravisA

I've moved the MAF to the boost side. There isn't much done to it in the programming department.

Last night i ran a scan while it was at idle and the 02 mv's was under 50mv? Does that mean its running rich and trying to lean it out ?


Thanks
Travis

Wild1

The O2s should be bouncing between .100-.900 If they are stuck or lazy then they should be replaced. How are you testing your O2s? On a DVOM, if you have a Min/Max they should be near the extreme between .100-.900...

Low numbers are very lean.

TravisA

I was using freescan and noticed the 02's were under.50 mV's. There was no bouncing back and forth between .100 and .900.

Thanks
Travis

Blownbird355

I think advancing timing at that rpm may help but dont quote me.

Wild1

Those O2s sound very suspicious... they shouldn't be still.

2cub49

Yes if the 02's are contant they're dead usually.

TravisA

Thanks Everyone

I'm gonna change a few things and run a scan to see what happens.

Thanks Again

Travis