So a customer drops his car off for an AEM tune

[Import Power]

Another shop had "tuned" it but it was running very poorly and could not get over 16psi with out breaking up and just over all running bad. Bad idle that is high, then low, then surges up and down, etc etc.

I will spend some time on it later, building a new map from scratch of course, I never trust another shops map and won't build off of it cause you never know what small detail you will miss on one of the buried graphs etc. But like looking into what was "tuned" at this point and why it may be running poorly.

But here is what I found in 5 minutes looking at it.

92 RTTT
Forged rods and pistons
Forged crank
JDPC TD05 kit
MHI EVOIIIs
Walbro pump
680 PTE
AEM Meth kit
boostaspark
etc

I like to shoot for pump gas (on TD05) 20 degrees at redline at 20psi. It's a good benchmark to kinda aim for.

This AEM was setup with 9 degrees at 20psi at redline. Wow, that's low.

Then I thought, Let me check the base timing. This needs to be set before anything else to ensure when the AEM puts out 15 degrees, the engine will actually be at 15 degrees.

Sure enough, when the car is at idle and the AEM is putting out 15 degrees, the actual mechanical timing on the car is.......5

So at 20psi at redline the car is somewhere around 0 to -1 degrees.

Knock control is set maxed out at 1.4 volts. Very conservative.
Oh wait, if it were turned on. Yep, it's unchecked, it's off.

Looked around for a few more minutes and found some other funny things. Can't wait to dig in and tune her up!

-Chris

[eengler2]

sub'd for results!

[Hard AttacK]

I bet the owner will be blown away when it buries him in the seat. That's quite a mod list to be running so shitty!

[Italo Grasso]

What shop tuned the car?

[tensecs2fame]

Originally Posted by Italo Grasso

What shop tuned the car?

Def not the shop that tuned yours lol

[Italo Grasso]

Originally Posted by tensecs2fame

Def not the shop that tuned yours lol

That's for sure. Hope you stay away from the shop too..lol

[TurboSinceBirth]

I'm not surprised. This is more common than you think. Quite a few places don't know how to tune our cars properly. They may put out AEM tunes on other platforms but the knowledge isn't there.

[Import Power]

Is there any car that would like -1 degrees at 20psi at redline?

It's not my place to divulge where it was tuned at. If he owner wants to post that, he can.

-Chris

[Grandpa Poser]

iniformance

[Escape-Performance]

I read this 3 times and still don't have any words.....