Going to dyno Saturday any suggestions

[34bud]

Ok, Saturday is the big day. I ask because the dyno guy said he had never done a 10 before. This is what has been done 2005 Q/C- Paxton S/C using their FMU sent my ECM and Paxton FMU to be calibrated by DC performance they knew at the time that the only thing changed was mid cat deleate and magnaflo. They also warned me I would no longer have towing capacity based on what they did to the ECM. I have installed A/F, fuel and boost gauges (supplied by the famous STINK) I have run the truck all seems well A/F at 3000 rpm will drop to high 13s fuel pres remains at 60psi and boost maybe 1lb keeping in mind this is only wicking the throttle while in park. Im told the fuel presure should spike to 100 psi under boost when signaled from the Paxton FMU. So with all that said any tips I should pass on to the dyno man he seems well versed on the Paxton systems.

 

[FerrariTruck]

Ok, Saturday is the big day. I ask because the dyno guy said he had never done a 10 before. This is what has been done 2005 Q/C- Paxton S/C using their FMU sent my ECM and Paxton FMU to be calibrated by DC performance they knew at the time that the only thing changed was mid cat deleate and magnaflo. They also warned me I would no longer have towing capacity based on what they did to the ECM. I have installed A/F, fuel and boost gauges (supplied by the famous STINK) I have run the truck all seems well A/F at 3000 rpm will drop to high 13s fuel pres remains at 60psi and boost maybe 1lb keeping in mind this is only wicking the throttle while in park. Im told the fuel presure should spike to 100 psi under boost when signaled from the Paxton FMU. So with all that said any tips I should pass on to the dyno man he seems well versed on the Paxton systems.

be very conservative with the a/f and maybe even shoot to keep in the 12;s.

would hate to see ya loose a motor. Also keep the intercooler full of icy

water. good luck

 

[TNVIPER]

3rd gear and push tow/haul button...

 

[LoveThisTruck]

You want your a/f ratio to be high 11s, low 12s at WOT. My fuel pressure dips down to 50-55 psi at WOT as the RPMs climb. 100psi That seems a bit much to me.

 

[TNVIPER]

You want your a/f ratio to be high 11s, low 12s at WOT. My fuel pressure dips down to 50-55 psi at WOT as the RPMs climb. 100psi That seems a bit much to me.

The paxton has the booster pumps that jump in at WOT...been told it makes em harder to tune but I dont know....your pressure is dropping to low going below 55....mine started leaning out a 55PSI...I have a Kenne Bell pump booster now that keeps it at 58+...

 

[LoveThisTruck]

The paxton has the booster pumps that jump in at WOT...been told it makes em harder to tune but I dont know....your pressure is dropping to low going below 55....mine started leaning out a 55PSI...I have a Kenne Bell pump booster now that keeps it at 58+...

Mine doesn't lean out at all. My tuner said he could put the a/f at 10.0 if he wanted... plenty of fuel.

 

[TNVIPER]

Mine doesn't lean out at all. My tuner said he could put the a/f at 10.0 if he wanted... plenty of fuel.

May be amount of boost...I am running 11LBs...

 

[LoveThisTruck]

May be amount of boost...I am running 11LBs...

So am I My a/f ratio creeps up to maybe 12.6 as it approaches 6k RPM.

 

[TNVIPER]

So am I My a/f ratio creeps up to maybe 12.6 as it approaches 6k RPM.

Mine was at 13.0....Want to have it below 12...

 

[LoveThisTruck]

Mine was at 13.0....Want to have it below 12...

Below 12.0?:dontknow: I thought mid 12s was fine on a built motor.

 

[TNVIPER]

Below 12.0?:dontknow: I thought mid 12s was fine on a built motor.

I think it is a matter of a tuner's opinion....Mine (torrie) recommended staying under 12..especially with higher boost....I think more a safety factor for the street....detonation will eventially take out even a heavily forged engine.....