VP Racing Octanium / 91 to 98 oct

[BC-Boy]

Well this stuff seems to work well. It takes a bit of time to mix , after a fill up a good 10-15 min of driving around town. but a half bottle into 91 runs a 94 oct tune smoothly , being catless the exhaust smell is very different especially with the full can @98 oct. it almost has no smell at all compared to strait gas. but indeed this stuff does seem to work we are slowly increasing the timing to see how it does , ill get back with some affirmative results

[juliog]

I've been pumping 100 oct at the track (or using Torco Accelerator when 100 is not available) to get a mix of ~94 for a while now. I only do this on track days however.

[BC-Boy]

Originally Posted by juliog

I've been pumping 100 oct at the track (or using Torco Accelerator when 100 is not available) to get a mix of ~94 for a while now. I only do this on track days however.

I have been tru tuners left and right, and none have been able to get me a solid 91 tune, allways tip-in knock and sometimes the odd hesitation , i add 1/4 can octanium to full tank and super smooth, seems like the bare minimum is 92oct for this car which makes sense 12.5 to 1 static compression is insane, you can only retard timing and run so rich. if you want to eliminate the torque dip without tip in and hesitation on 91 .. i havent found a tuner who can accomplish that. i load a 94 tune and wow, the difference is night and day, 94 is kind of the sweet spot for this car id say, my 97 maps are better.. they do pull a bit more but the difference is minimal from 94 to 97 but the difference from 91 to 94 is just wow.. on 94 i can stab the throttle at 2000rpm no tip in knock and she goes .. 91 i just get on it too fast even at 3000 and it sometimes gives a crackle pop out the exhaust and hesitates. tru testing i would have to say 94-95 is the optimal octane rating for this car, 97 powerwise is not worth the extra money, but for ppl running stage 2 tunes on 91 from what ive seen its worth the extra buck in going with octanium or torco to get to 94 ..

[BC-Boy]

they should make a thicker head gasket for this car (aftermarket) to get this cp down, it make absolutly no sense subi toy , busted this car out with 12.5 .. thats great for e85 and higher octane gas but i would have to say that on a global scheme of things 91oct is the benchmark that all cars should be based upon , look at cali which is huge.. 91.. i think this had somthing to do with emissions tho... less gas more compression 2 cats ,retarded stock cam timing tables= cafe+low emission.love my car but this high cp is hard to deal with