Search:

How do I adjust the rev hanging? After I rev it in neutral it is very slow to return to idle. I've noticed this while coasting, haven't tried it stationary yet.

91454

Ben you nailed it. Torque management advance is the culprit. It's actually fairly difficult to get to happen, very specific set of parameters to trigger it so not that big of a deal for overall...

I've got this tune about 95% there. Running very strong and driving like stock. I'm seeing a bit of a weird spark reduction under half throttle that I can't figure out. Can feel a little kick in...

Mine was happening above .4 g/cyl up to 5200 rpm, the exact location of the static retard on cyl #1. Look at Spark-Retard-Static Retard-vs Cylinder. Log advance on each cyl and I bet you'll see one...

I was just able to track down the source of some similar phantom knock I was seeing on my C7Z, with the help of some guys on here. Look at the static retard table. On mine the cylinder labeled #1 was...

I zero'd out the static retard table and went for an easy-ish drive (3500 rpm, 40% throttle, 1.0 g/cyl). Only saw 1 second during a 33 min log where cyl #5 went to 1.4 deg and tapered off to be gone...

SOI = Start of injection.

I was curious if that was actually the #2 cyl or #2 in the firing order.

Why does that cyl need special treatment?

Would I be taking to much of a risk if I zero the...

Yep, I see it in the table on cyl#1. What's the fix? Zero out the whole table or just deal with the false knock?

That's got to be what I'm seeing in the log. Those are the exact parameters I'm...

Well I'm still losing rail pressure and Inj PW skyrockets by the time I can get the pedal to the floor with E60. I found the SOI channel and am in the low 300's when rail pressure starts to drop so...

I just adjusted the cells that would take SOI beyond 360 so that they will only increase to 360. Getting ready to go data log in a few minutes. I'll post back up with the results.

For E85 are you guys zeroing out the SOI Alcohol Offset table? I'm afraid those modifiers are moving SOI to well before EVC in some cases.

Also, there are a few tables that top out around .8...

So the fix is to desensitized knock sensors or adjust virtual torque or something else?

Here's one of the most recent logs. I'm still trying to chase down the KR. I've incrementally stepped it up to 104 octane with Boostane, no effect on KR. I've reduced the timing by the amount of...

I'll upload it when I get home later this afternoon.

The idle and drivability are perfect once I get the codes cleared after the flash. If you're referencing the tune I attached in the first post I've moved on to a different tuner and am very happy...

I've received some questions about the DSX Aux Low side so here's a screen shot of the before and after fuel pressures. These are two different tunes so not a completely apples to apples comparison...

Just found this posted by Ben in the SOI calculator thread:

"Stock C7 Z06 has SOI at WOT around 354
Stock cam is 189/223 120 LSA (again centerline guessing straight up at 120LSA, again VVT...

I've done lots of searching and haven't found a clear answer. On the C7Z, when is "exhaust valve close" and "intake valve open"? Measured in the same manner as SOI.

I'm getting this tune ironed out. Drivability is much improved over the initial tune. I've added the DSX low side and am maintaining desired pressure throughout the rpm range. The low side is...

I finished the Calibrated Success Gen 5 dvd and definitely have a few areas of concern in my tune.

They increased my SOI by 10 degrees in the upper end which has it as early as 366 degrees.
They...

Yes, I know. That's why I've got the DSX low side system on the way. It will be here Tue so hopefully installed by next wknd. Right now I'd really just like to figure out why I've got that dead spot...

Hello all,

I recently installed a Magnuson 2300 on my M7 ZO6 with some supporting mods and took it to a local shop for tuning. I'm having a few drivability issues and would like to get a second...