6.4 Tune Results

[Tree Trimmer]

if your gonna run a race tune normally, like most people, and you want a tune below that, why go one step down?

if your tuning down, then you'll probably end up needing more than just a little down.

towing, wife gets in the truck, kids take it. if race is to much, hot street probably is to.....

 

[Aggie6.4]

Can someone post what each gearhead tune is equivalent to compared to spartan tunes??

 

[Dustball8504]

Can someone post what each gearhead tune is equivalent to compared to spartan tunes??

Hot Street is equivalent to the 275

Hot Race is equivalent to the 310

These are as far as track times go.

 

[Gearhead]

Is anybody still having trouble with the downshift and unlock out of OD at WOT? If so send me an email. I want to get a modified file out to a couple of people to see if the issue goes away.

 

[3brorce]

Is anybody still having trouble with the downshift and unlock out of OD at WOT? If so send me an email. I want to get a modified file out to a couple of people to see if the issue goes away.

I do have this issue but not running your tunes yet darn it!

 

[strokinKR]

Is anybody still having trouble with the downshift and unlock out of OD at WOT? If so send me an email. I want to get a modified file out to a couple of people to see if the issue goes away.

I am. Not just at WOT either.

 

[3brorce]

You should probably shoot him an email then.

 

[MINK]

I do have this issue but not running your tunes yet darn it!

I am. Not just at WOT either.

What's it doing?

 

[strokinKR]

Nah I'm just going to wait until its fixed for sure.

 

[strokinKR]

What's it doing?

The tc will unlock under WOT at say 65mph and go to 4th but it wont lock back sometimes even after it goes to 5th. Mine will do this even less than half throttle like when passing on the hwy. All in all the tc unlocks way too easily.

 

[Gearhead]

you guys shoot me an email and send the offending file and the serial number of your programmer. i am wanting to see if a simple change i made fixes it.

 

[3brorce]

The tc will unlock under WOT at say 65mph and go to 4th but it wont lock back sometimes even after it goes to 5th. Mine will do this even less than half throttle like when passing on the hwy. All in all the tc unlocks way too easily.

Mine does pretty much the same thing but it does usually re-lock up.

 

[Gearhead]

The converter has to unlock during a downshift out of OD to keep from breaking stuff. The issue is that on some trucks it isn't relocking.

 

[6.4psd916]

Most of my issues are in the 3-5 and 5-3 shifts when towing. Even with bars it will start to buck at the wrong loads, but it could be my trans starting to give up.

 

[3brorce]

I call mine converter shutter lol.

 

[Gearhead]

Most of my issues are in the 3-5 and 5-3 shifts when towing. Even with bars it will start to buck at the wrong loads, but it could be my trans starting to give up.

That is fuel rail pressure flutter.

 

[Jmoore1225]

That is fuel rail pressure flutter.

Is this something we have to live with or is there a solution to it? I get it towing around 50-60 gradually accelerating. Let out of it a Lil get back in it & it goes away. HPFP only has about 5k miles on it.

 

[Mikey'sDieselPerformance]

For comparison, Our 6.4 Did 552 whp on the dyno with the HD300 and 596 whp with Matt's MCC files in the Performance setting. Truck is stock other than a MiniMaxx, Intake, and Exhaust.

 

[3brorce]

Dynoed back to back same day?

 

[sootie]

For comparison, Our 6.4 Did 552 whp on the dyno with the HD300 and 596 whp with Matt's MCC files in the Performance setting. Truck is stock other than a MiniMaxx, Intake, and Exhaust.

what gear ratio