Below is a dyno graph showing the difference between 87 octane and 93 octane. According to the shop, no other changes were made to the car/tune/etc. Similar weather for both passes, car at normal operating temperatures:



Note: 6 RWHP peak difference. Not that much, but look at the difference in the mid range, especially 4500-6000 rpm. Looks to be ~20 RWHP difference in places (corresponding increase in torque, of course).

Thanks to IPS Motorsports for doing the testing and posting the results (originally on a Camaro Forum).

 

this is on a stock car?

 

Yes, bone stock M6. FYI - not my car.

 

yea and they only run 14.0 seconds and 13.7 seconds. making the mustang look bad.


i am 100 percent sure i do not want a camaro/chevy shop tuning my 2011 GT. they can 'learn' how to program fords with someone else's car. too many blown up 05+ from bad shops.

 

strange that the 87 seems to come up earlier on the low end, must be a testing glitch

 

thanks for posting Bob!

 

What does it matter as long as the GT keeps kicking the Camaro around?

 

That's not the point of my post. They developed some good data here, which is all I was trying to show.

That is simply a result of at what rpm they began the dyno run. It means nothing.

 

Interesting... I cant wait to get my 5.0 tuned. She arrives Wednesday

I should have tons of videos and pictures up

 

Good data to have regardless of the source. The 93 octane tq has to be almost the same as the LS3.

 

The numbers look good in the mid range bob.But what about the A/F could that have something to do with it?

Tim L

 

I really have no idea Tim. Would have to see the data to make any sort of educated guess.