View Single Post
Old 05-09-2014, 11:06 PM   #119
steve99
Banned
 
Join Date: Dec 2013
Drives: FT86
Location: Australia
Posts: 7,996
Thanks: 1,035
Thanked 4,997 Times in 2,985 Posts
Mentioned: 598 Post(s)
Tagged: 2 Thread(s)
Quote:
Originally Posted by Fizz View Post
I'm curious to know....will switching to a better grade/quality fuel (i.e. going from Shell 98RON to United 100) without any further tuning simply reduces knock occurring, but doesn't necessarily add any more power?

I'm half tempted to switch to United 100 but there aren't any United stations in my area. The Shell is literally down the road....and I generally fill up there for convenience sake.

By the way I'm currently getting e-tuning (almost completed) done by @jamesm and I can say that the car feels so much better now compared to the OTS Stg1 that I was using. I would highly recommend his services to anyone thinking about getting a custom tune, especially for us living down under because our fuel quality is quite different to what our friends get overseas.
If you have significant knock and/or your IAM is dropping to less than one then switching to a highr octane fuel should increase power slightly as the ecu will be able to run full timing advance.

If you were tuned for no knock and iam always 1 then I believe their would be no advantage unless you then advanced timing to take advantage of the better fuel.


+1 on @jamesm
steve99 is offline   Reply With Quote
The Following 2 Users Say Thank You to steve99 For This Useful Post:
Gums (05-10-2014), jamesm (05-10-2014)