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i just installed the new 9r08 crom and i noticed that they have an 87 tune and a 93 tune now. before it was an 87 and a "performance tune". i was under the impression that the performance tune was a 91 octane tune which was great for me because i can't buy 93 anywhere... should i go back to my old crom??? thanks for the help...!

performance tune requires minimum 91 octane so you are good to go.

there is no more 91 octane tune with the new update...

the tunes are for 87 octane, or 93 octane... that's it... no more 91 "performance" tune...

if you want to use the 93 octane tune, just go into modify tune, into the spark advance settings, and for each rpm range, remove about 2* or 3* of timing... that should lower it enough so that you don't get any knock/ping at WOT...

if you still get some, then lower it a little more and try it out...

thanks for the input!

06MonteSS wrote:there is no more 91 octane tune with the new update...

the tunes are for 87 octane, or 93 octane... that's it... no more 91 "performance" tune...

if you want to use the 93 octane tune, just go into modify tune, into the spark advance settings, and for each rpm range, remove about 2* or 3* of timing... that should lower it enough so that you don't get any knock/ping at WOT...

if you still get some, then lower it a little more and try it out...

Hmm, I loaded the 87 octane tune and bumped up the timing 4*, 2*, 2*

what octane gas are you using?

and the timing adjustments are for WOT only... so you should do a log and see what kind of KR you're getting...

06MonteSS wrote:what octane gas are you using?

We're also stuck using 91 octane pump gas here as it's all that is available

Where is this magic land that has 93? my guess is mainly in the Eastern states

yep north carolina has it and south carolina i know.

some place here also has 94 but its slowly getting stupid ethonal in it 10% at some but now all stations

kfc wrote:

06MonteSS wrote:what octane gas are you using?

We're also stuck using 91 octane pump gas here as it's all that is available

Where is this magic land that has 93? my guess is mainly in the Eastern states

A wise man once said "EVERTHING IS BETTER IN TEXAS!!!"

We have it on the Gulf Coast

I have 93 here here in CT... and also at a station about 15 minutes from me, I can get Sunoco GT100 (aka CAM2) 100 octane unleaded, right at the pump...

LOVE that shit!!

well here monte out cam2 is leaded. i aint ran any cause i think lead kills cats. lol its sonoco too

what state are you in?

north carolina

Sunoco 260 GT100 - which is the 100 octane unleaded, right at the pump... In certain areas, Sunoco 260 GT 100 Unleaded is available under the "CAM2 GT 100" label.

Sunoco 260 GT 100 is designed for high performance street cars, muscle cars, classics, street rods, motorcycles, karts and marine applications. Sunoco 260 GT 100 contains no metallic compounds to harm catalytic converters or oxygen sensors. It contains a comprehensive additive package for greater engine protection and reduced fuel system deposits. Sunoco 260 GT 100 is also compatible with virtually all two-stroke synthetic and mineral based motor oils.


North Carolina has it:

Farmington Dragway
NC State Route 801
Advance, NC
(336) 998-3443
Race Nights Only.

Handy Pantry #85
6401 Old Statesville Rd.
Charlotte, NC 28213
(704) 597-9667

Eggleston's Citgo
1117 W. Washington St.
Eden, NC 27288
(336) 623-8375

Piedmont Dragway
6750 Holt's Store Rd.
Julian, NC 27283
(336) 449-7411
Race Days Only.

Spinx Oil Co
1302 Roberts Ave.
Lumberton, NC 28358-2276

Oliver Oil Company
1811 E. 5th Street
Lumberton, NC 28538-6107
(910) 738-1401

Rockingham Dragway
U.S. Highway 1, North
Marston, NC 28363
(910) 582-3400

Citgo Fuel Center
3361 Hwy 70 S.E.
Newton, NC 28658
(828) 464-9084

Two Worlds Apart
320 S. Salisbury Ave.
Spencer, NC 28159
(704) 633-7171




and so does South Carolina...

Spinx Oil Co # 179
2901 N Pleasantburg Drive
Greenville, SC 29609
(864) 850-9892

Southeast Tractor
14720 Hwy 151
Jefferson, SC 29718
(888) 658-7171

Carolina Motorsports Park
3664-D Kershaw Hwy
Kershaw, SC 29607
(803) 475-2448

ours aint labeled gt100 its just cam too but the octane rating is 110 so its a little higher.

i wish we had one close by that thing would get it every fill up lol