IPF Camaro V6 vs Procharger Mustang V6 (Soon)

[KMPrenger]

Did you get to run her?

[MagnumForceGB]

Originally Posted by KMPrenger

Did you get to run her?

Yeah, first run was 14.5 @ 103, that's the one where my reduced engine power message came up. Think it might have over-revved. Second and third runs were 14.1 @ 101. The car is pulling 8 degrees of timing and my AFR was 13:1 spiking to 14:1 at boost. I loaded the old tune that was running too rich for me and now I have no knock retard so far. Something in my engine settled and now I'm getting more air into the chambers than before. Don't know what happened though, went from a 11:1 AFR to a 13:1 AFR by only changing the oil it seems.

[Vader2011v6]

Originally Posted by MagnumForceGB

Yeah, first run was 14.5 @ 103, that's the one where my reduced engine power message came up. Think it might have over-revved. Second and third runs were 14.1 @ 101. The car is pulling 8 degrees of timing and my AFR was 13:1 spiking to 14:1 at boost. I loaded the old tune that was running too rich for me and now I have no knock retard so far. Something in my engine settled and now I'm getting more air into the chambers than before. Don't know what happened though, went from a 11:1 AFR to a 13:1 AFR by only changing the oil it seems.

Are you going to get a new tune or your going to try to run it again ?

[MagnumForceGB]

Ok, WTF. I loaded the tune I had problems with before with being too rich and now my car is running great. And I do mean great, not even a dip in RPM's like it was going to stall. I don't know what happened, but will keep driving it to see how it handles this tune.

[stevey_frac]

Hopefully you have stuff sorted now Magnum.

I'm thinking one day i'll go FI, perhaps... So i'm really rooting for all you FI guys!

[Ventmaster]

Originally Posted by MagnumForceGB

Yeah, first run was 14.5 @ 103, that's the one where my reduced engine power message came up. Think it might have over-revved. Second and third runs were 14.1 @ 101. The car is pulling 8 degrees of timing and my AFR was 13:1 spiking to 14:1 at boost. I loaded the old tune that was running too rich for me and now I have no knock retard so far. Something in my engine settled and now I'm getting more air into the chambers than before. Don't know what happened though, went from a 11:1 AFR to a 13:1 AFR by only changing the oil it seems.

Ported IM ?

[MagnumForceGB]

Well, this is weird. I've been running the original tune for over 100 miles now and the engine has not dipped in RPM'S once like it was going to stall. But my misfires have come back. Before with this tune and the ported IM my LTFT's were +10%, now they are +21% with the same MAF rate, getting more air into the chamber.

I think the misfires is not from a fueling issue but timing. On my custom time at 5000 RPM'S I had 8° of KR, 8° of timing advance and a 13:1 AFR. Now I have 0° of KR, 18° of timing and a 12:1 AFR. I think the misfires are because the combustion is still happening when the exhaust valves open. Before with the custom tune there was not enough fuel and pre-detonation was happening.

I will email Arno tonight and see what he says.

[MagnumForceGB]

Ok, another freaking update. Have been trying various tunes and doing logs on them to try to get as much information as possible. The V60C1D tune is the first tune I tried that had no stalling issues, but would have popping in the exhaust at WOT. I found out this is Fuel Knock from being too rich and looked like its lean because the oxygen is not fully burned off. So when I am at WOT with that tune my AFR is actually 10:1 all the way through, but looks like its 12:1 after 5000 RPM's due to the fuel knock. The issue would show up though once the LTFT's settled at over +10% from cruising around. This is the tune I first raced with and had no problems since my LTFT's hadn't settled.

On the other tunes (V60C1 or V60C1C7) the LTFT's will be negatives but at WOT the AFR's will be at 13:1. This causes no fuel knock but is causing knock retard heavily, pulling almost 10 degrees of timing. The car will also try to stall since its running so rich when it re-opens the throttle blade (the V60C1D tune will go to 14:1 AFR, the V60C1 tune will go to 10:1 AFR).

I sent this information to Arno, see if we can come up with a tune that will work in both worlds. I have been logging the MAF rates, timing, knock retard, LTFT's, STFT's, speed, misfires, RPM's, and injector pulse widths. If we can get the fuel rates correct for 1000 to 4000 RPM's and keep the other ones the way they are now we will be golden.

[sycraft]

I still think the stalling is from lack of air across the MAF when the throttle is closed, the air is stalling around the MAY, no flow. Try running the car with the MAF not in the tube, it will not run...

[MagnumForceGB]

From what my logs are showing on the VC60C1 tune when coasting down to a stop at the 40-30 mph mark the MAF is reading 80 CFM going across and the injectors are firing at 1.8ms causing an extreme rich condition and killing the engine almost. On the V60C1D tune the MAF is reading 40 CFM and a injector pulse of 1 to 1.37ms and the car doesn't stall.

For some reason the V60C1D tune is reading lower MAF at the same speed and same RPM as the V60C1 tune. Now when the car gets into the 5000 RPM range the V60C1D tune has the injectors at 10.3ms and the V60C1 tune has them at 5.14ms. The V60C1D tune gets the AFR at 10:1 causing a fuel knock and V60C1 tune is too lean at 13:1 causing knock retard.

I am going to send Arno an AFR list and some MAF readings, but the V60C1D tune needs to be left alone from 0 to 4000 RPM's and have 5% of the fuel removed from 4000+ RPM's as a start. See if he responds back.

[MagnumForceGB]

Went to the track night for the final time this year. Couldn't race my wife's Mustang since the driveshaft is vibrating at 100 mph from the gear swap. My first time I did a hero run of 13.429 @ 106.90. The next runs were bad, spinning and wheel hop.

I was running V60C7 tune, last week I was running the V60C10 tune. My trap speed was 101 last week and this week was 107. Difference was the knock retard was only 4 degrees instead of 8 degrees. DA was also lower last week, going to give Arno the data, but its getting better.

My video of the hero run.


I am car #843

[Vader2011v6]

Nice runs. My runs did the same as the night cooled down. Totally lost traction when it got colder. It's nice that once your off the line you can floor it being an auto. Think that being a manual for launch there's a lot if holding back otherwise car will spin out first the whole way and go sideways and my car has a lot of spin in second gear as well.

[MagnumForceGB]

Originally Posted by Vader2011v6

Nice runs. My runs did the same as the night cooled down. Totally lost traction when it got colder. It's nice that once your off the line you can floor it being an auto. Think that being a manual for launch there's a lot if holding back otherwise car will spin out first the whole way and go sideways and my car has a lot of spin in second gear as well.

Thanks, first time I had wheel hop at the track and I have subframe inserts and trailing arms. May need toe rods now.

The crappy thing is I got lined up against 3 V6 and it was completely unfair. See if Arno can get rid of the 4 degrees of knock regard that is still there.

[Vader2011v6]

Originally Posted by MagnumForceGB

Thanks, first time I had wheel hop at the track and I have subframe inserts and trailing arms. May need toe rods now.

The crappy thing is I got lined up against 3 V6 and it was completely unfair. See if Arno can get rid of the 4 degrees of knock regard that is still there.

The car isn't holding back it's me that has to hold back otherwise ill spin. I know what u mean about toe rods. I also need bushings as well. It's good to see more Sc v6s on the track.