assuming u are using the sct tuner, datalog runs with the 3 tunes. pay special attention to your spark advance. save the runs on ur cpu and compare what the timing does with 93 octane gas and the different tunes. i forgot what the timing retard is supposed to be for nitrous, but i think its 2 degrees for every 50hp shot. u may want to research that though first. if the 87 tune lowers ur timing enough the spray then its fine. if not just go i there and lower the timing. the only thing is, u would need to chang ur tunes when u plan on racing. if u track the car then itsno biggie, but if u do the occasional street race then ur screwed. or u can buy the bank chip from sct with the little **** that u can change tunes on the fly without haveing to reflash the ecu.

 

That is correct in some situations. Changing it to running 93 on 87 tune may take the place of reducing the timing for nitrous on certain combinations makes it correct for all situations. When spraying nitrous, increasing the fuel octane level and reducing the engine timing by themselves both have the same intent and effect in that they are both done to prevent detonation that can damage your engine and they both reduce the overall power output of the engine as measured at the flywheel/flexplate. That being said, a great enough change in either one of these two factors or a combination of small changes to both at the same time can produce the same desired result of preventing detonation on a given combination. The amounts of change necessary to accomplish this result in any combination will vary according to many factors and these two are not the only two tools available to prevent detonation when spraying. In general, the more you spray, the more of these tools in greater quantities need to be employed to prevent detonation. The key is that all the tools that are employed to prevent detonation do indeed reduce your overall engine power as well. The key to optimal performance on nitrous is to use the minimum combination of these tools to prevent detonation for a given combination and spray level.

 

i have bounced the limiter a few times, i'm not saying it will never do anything, but as long as you lift you won't really see the limiter that long and i have never even as much as started to melt a plug let alone worse

i squirt on 87 octane all day long as long as it's about 75* or cooler and i run 12* timing
squirting 80hp

more octane is a waste if your already not lean and slows you down unless you need it