The North Texas Evo Club had a dyno day last Sunday hosted at Cobb Tuning Plano. I'd previously had my car Protuned for e85 with the following:

• K&N drop-in filter
• DW800 injectors
• Blaqops + Wally 255lph
• AMS O2 / Downpipe
• AMS 200 cell cat
• Modified stock cat-back exhaust
• Grimmspeed 3 port EBC
• AccessPort

And here's where I was: 360whp/396tq on a Mustang (compared to my 93 octane Protune from the same day) on that balmy December day:



With nothing more than the swanky new Cobb quad-tip exhaust and some 100+ degree temperatures, I ended the day +27whp/+8tq (no changes to the tune):

 

Any video clips of that exhaust??? Nice gains btw!

 

Do you daily drive your MR? How's the tranny doing? Any slippage?

 

I expect Cobb to post their video from the dyno day this week or next. I'll link to it when that happens.

flipflop, yes, this is my daily driver, and the transmission doesn't skip a beat.

 

Great numbers, Matthew!

 

Im going in for my e85 tune today as well. I hope to hit similar or close power. Great numbers for sure!

 

He has just a touch of slippage. Its stout!!

 

Very nice numbers!

 

Matthew hasn't mentioned anything about slippage, in fact above you he says it doesn't skip a beat.

Good numbers man, I hadn't realized that you had switched exhaust setups.

 

I was in the shop the Friday before the dyno day when the new exhausts came in; Chris took me out to look at them, and the rest was history.

I disagree with what Tom calls slippage. What he's describing is that in Normal Automatic mode at high loads the car will get to the point where it would shift, seem to slightly reduce power, and sit there for a second before shifting. He says it happens to his car @WOT. I took him out for a ride, and at full throttle it doesn't happen in my car, but if I'm at, say, 60% throttle I did experience it once. It doesn't feel like mechanical slipping at all...

 

I was experiencing the same thing when I was using the accessport, but after going to open source it is gone. I am pretty sure Cobb has a different way of controling how the trans acts and that may be one of their characteristics. I wouldn't call it slippage either as I am making more power now and that feeling is gone.

 

Nice numbers!

 

I get the same thing, from my experience it's not a mechanical problem rather then a TCU table problem. TCU confused with amount of power being made and releases clutch pressure.... My theory anyway...

 

It's torque management and it's not in the TCU.

 

Forgive me if this is a stupid question but I thought you had to have a minimum of 1000cc injectors to tune on e85?