Alcan KobRa Posted March 25, 2014 Report Share Posted March 25, 2014 So I take delivery of my 08KR in a few weeks. We only have 90 octane in Alaska so should I utilize a booster? My 07 was tuned for 90, but I will not be retuning this one. Do you think I'll be good or should I use a booster. I can get Torco if needed. Thanks, AK. Link to comment Share on other sites More sharing options...
Alcan KobRa Posted March 26, 2014 Author Report Share Posted March 26, 2014 Hmm, 40 views and no one has anything? Link to comment Share on other sites More sharing options...
msb64 Posted March 26, 2014 Report Share Posted March 26, 2014 There may be some concerns with O2 sensor contamination with boosters or other additives. You can always get a hand held tuner and custom tune for the car, tweaked for your available fuel. With the tuner, you can always pull another degree of timing if you need to. Probably best to consult with one of the big reputable vendors, just to make sure. Link to comment Share on other sites More sharing options...
shelbypt Posted April 13, 2014 Report Share Posted April 13, 2014 I would not want to run 90 octane in my KR. I would be afraid of pre-detonation which could cause some major engine problems. Link to comment Share on other sites More sharing options...
svttim Posted April 13, 2014 Report Share Posted April 13, 2014 http://www.fueltechexperts.com/2008/08/08/octane-boosters-which-is-best/ Link to comment Share on other sites More sharing options...
super hiss Posted April 13, 2014 Report Share Posted April 13, 2014 We're not in austrailia, I never heard of those brands and I doubt I'll see them. Link to comment Share on other sites More sharing options...
svttim Posted April 15, 2014 Report Share Posted April 15, 2014 You never heard of Amzoil? Link to comment Share on other sites More sharing options...
super hiss Posted April 15, 2014 Report Share Posted April 15, 2014 Nope, only heard of race gas which was 50 a bottle and torco which isn't on their tests Link to comment Share on other sites More sharing options...
revan Posted April 16, 2014 Report Share Posted April 16, 2014 Call the Ford Racing techline (1-800-FORD788) and they should be able to give you guidance on the limits of your tune. The intake and tune on the KR was developed by Ford Racing and can actually be purchased by owners of base GT500's (http://fordracingparts.com/parts/part_details.asp?PartKeyField=9880). In the process of building up my GT500 I've learned a few things from the reputable tuners that work these cars. The base GT500 tune (the stock tune rated for 500HP) was actually tuned very conservatively, with ignition timing low enough so that if the owner accidentally put 87 octane gas in the car it wouldn't knock and kill the motor. This was done mainly due to warranty concerns and cause the 07-09 GT500's (and KR's as well) didn't have knock sensors. Obviously, turning up the timing to be more in line with the proper octane fuel for this boost level (91+ octane) yields significant performance benefits (this is part of where the aftermarket tuners get the extra power from) but of course you have to make sure you always give it the premium grade fuel The KR tune was rated at 540 HP. I know some of that was a result of the better intake and bigger MAF housing, but a lot of it was in the tune as well. My gut tells me they upped the ignition timing but I'm not sure. Ford (and Ford Racing) tunes are usually tuned for the lowest common denominator of what a driver may encounter anywhere in the US so they should be safe for you. I actually didn't know the highest you could get in your area was 90 octane (until I read your post the lowest I've ever seen is 91). Good luck! Link to comment Share on other sites More sharing options...
svttim Posted May 9, 2014 Report Share Posted May 9, 2014 Nope, only heard of race gas which was 50 a bottle and torco which isn't on their tests Just bought a case of Amzoil. It was shipped out of Superior WI. I have used it and am happy with the results Link to comment Share on other sites More sharing options...
MJN Posted May 10, 2014 Report Share Posted May 10, 2014 Just bought a case of Amzoil. It was shipped out of Superior WI. I have used it and am happy with the results Now just need some AMSOIL in the oil pan too Link to comment Share on other sites More sharing options...
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