IPF Camaro V6 vs Procharger Mustang V6 (Soon)

[MagnumForceGB]

Thanks for the info Gretchen. I think my fuel problem right now is I'm ramping up the pressure too late, my fuel rail pressure increases as the RPM increases but it is too little too late. On the LFX table it is 15 MPa starting at a low RPM, LLT goes to 12 but the IPF ramps to 15 slowly from 11.

The only injector timing event I can access right now is one that is for low RPM. I'm at work right now so I can't post the exact table name. It goes to 390 degrees, which I believe is either the degrees to TDC on compression stroke or to ignition.

[MagnumForceGB]

Forgot to also say that the IPF ramp for fuel pressure was probably why I could tune my meth correctly. In 2nd gear it goes by too fast to hit the correct fuel, but in 3rd it was slow enough that the fuel pressure rose, adding more fuel than 2nd gear did at the same RPM.

[MagnumForceGB]

This is what it looked like from before, I haven't started really touching the fuel system because I'm still trying to get the MAF Frequency correct, it was all over the place. Then I have to get the MAF Correction table correct so the LTFT's are not moving around. After all that is done then I can work on the fuel system.

This was going into 2nd gear from 3rd or 4th. I haven't done a full WOT run yet.

[Ventmaster]

OK- I'm thinking that looks pretty good(?).

You're pulling some timing at the lower RPM, is that due to the lambda < 1.0? I was thinking 0.7 would be a rich condition, but I'm really not sure. Have I got it backwards?

Edify please...

[MagnumForceGB]

Originally Posted by Ventmaster

OK- I'm thinking that looks pretty good(?).

You're pulling some timing at the lower RPM, is that due to the lambda < 1.0? I was thinking 0.7 would be a rich condition, but I'm really not sure. Have I got it backwards?

Edify please...

That is actually torque management from a downshift. That was killing my momentum on the track, I'm going to slowly remove it.

0.7 lambda is 30% more fuel than oxygen, 1.3 is 30% more oxygen than fuel. As you can see, water/methanol is extremely powerful when sprayed right. I wouldn't run this lean though on a full drag run, the cylinder would probably get hot. It is fine for my short 2 second run though.

[MagnumForceGB]

Finally got warm enough last week for me to fully install the driveshaft safety loop. I also replaced all the bolts and nuts on my exhaust, the ones that came with it were old and allowed the exhaust to move around too much. After all that was done the car no longer makes weird noises, the exhaust sounds like it is coming from the rear.

Still working on the fuel trims on the tune, but I've managed to get the fuel pressure up and hold it at high RPM. That was in 2nd gear though, I tried to floor it in 1st gear and it was spin city, way too much power for my tires on the street.

[GretchenGotGrowl]

Originally Posted by MagnumForceGB

Finally got warm enough last week for me to fully install the driveshaft safety loop. I also replaced all the bolts and nuts on my exhaust, the ones that came with it were old and allowed the exhaust to move around too much. After all that was done the car no longer makes weird noises, the exhaust sounds like it is coming from the rear.

Still working on the fuel trims on the tune, but I've managed to get the fuel pressure up and hold it at high RPM. That was in 2nd gear though, I tried to floor it in 1st gear and it was spin city, way too much power for my tires on the street.

The weather has been great, hasn't it. I wish I didn't have to work all weekend...I would have been able to pick my car up and start the break in process (again), but gotta make the money so I can do the mods .

Sounds like the tuning is coming along. If you can keep the fuel pressure up all the way through 3rd then you will have the problem licked. Then everyone will be looking to you to help tune the LLT (your inbox will be full, LOL).

Keep up the good work, you are rapidly becoming the LLT king! Rich will have to hand the belt over to you if he doesn't step up his game.

[MagnumForceGB]

Thanks, it's been fun learning how the Germans think. I will have to get the exact numbers latter but it took 2 seconds for 2nd gear to go from 2000-7000 RPM's, it is scary fast. I think I'm at a sub-4 second 0-60 if I get traction.

I don't have access to the fuel injection start angle, but closing the exhaust valve earlier seems to have helped start the injection earlier. Right now I peak at 1900 psi at 6500 RPM's in 2nd gear, then it drops to 1760 psi at 7000, but my AFR is now 13.1, so it is getting safer. My limited time in 3rd gear shows it holds steady, but I really don't want to go above 90 mph yet, the cops have been out lately.

I will be glad when I get the engine tune done, the transmission tune pisses me off. It holds gears too long at light throttle pressure but doesn't want to downshift at higher throttle pressure. At least I will be able to fine tune it to my driving style.

[MagnumForceGB]

It is improving, but I think I have a leak on bank 1, it is reading leaner all the way around, not just at WOT. Will have to tighten up the header bolts again, but it sucks because it is on the passenger side which is the tightest place.

My IAT sensor is adding too much timing, I need to reduce it by 1 degree all the way around, that should kill the knock retard I'm getting.

[MagnumForceGB]

I may have made a mistake in modding my Camaro, I think I went too far. My Mustang 5.0 feels slow now and I now have to spend money to make it faster.

I floored it from a 10 mph roll in 2nd gear, it finally shifted into 1st with the TCC not spinning backwards at 20 mph and it took 3 seconds to reach 60 mph from 20 with the 1-2 shift included. Looks like I only broke traction for a split second at 4000 RPM in 1st, my timing dropped to 8 from 18. I need to ask Arno if that is how traction control works. The tires I have on are amazing to handle that power.

I'm going to post up a snapshot of what the data looked like but it felt amazing, no dead spots, no giving up on power at the top end. The shifts are slowly firming up, it hits hard enough to gain a burst of speed but not enough to break traction.

[MagnumForceGB]

Well, this sucks. I did a 3rd gear pull and the car felt fine but going through the datalog, the belt is slipping. It doesn't slip in 2nd gear but in 3rd gear it does, might be temperature related. This was with a 3.48" pulley, a 3.60" pulley might not slip.

Probably going to switch back to the stock pulley, see how it does with the 3.91 gears and it will be something that others can do without methanol injection.

[MagnumForceGB]

Already got the supercharger off the car, easier when you have fresh bolts installed. This is what the spacer looked like above one of the pulley's.

[sycraft]

try a gatorback belt, I had no slipping with one of those

[MagnumForceGB]

Originally Posted by sycraft

try a gatorback belt, I had no slipping with one of those

Thanks, got it on my Amazon list in a close size to what I have. Going to use the stock pulley for a while, I am curious to see what I run with it now that I have more stuff fixed.