Race Gas
You won't be changing the o2 sensor all the time. I have now had my Evo for 2.5 years and have raced the dog mess out of it, often times on leaded race gas, but my o2 sensor still works. I don't run full tanks of leaded all the time - I always have it mixed with pump gas for daily driving and only run straight 112 for racing purposes, which is short term.
boost question
With race gas:
1) Retune leaner with more timing and raise boost = most power potential
2) Same tune with boost cranked = next most power potential
3) Retune leaner with more timing and keep boost the same = some power potential
4) Same tune and same boost = waste of money. No gains to be seen unless the current tune and boost are already at the limit and causing knock
1) Retune leaner with more timing and raise boost = most power potential
2) Same tune with boost cranked = next most power potential
3) Retune leaner with more timing and keep boost the same = some power potential
4) Same tune and same boost = waste of money. No gains to be seen unless the current tune and boost are already at the limit and causing knock
I have a question along those lines. I have a 06 MR with every bolt on from Buschur (Buschur actually did the work and tuned it). I have a drum of C16 coming for a few drag events coming up. I just finished a track day so I am still on my 93 Oct/ 21lbs. of boost. I see that you were mixing 50/50, etc. Any reliable advise for raising but not overboosting without running a full tank of C16? David B. told me to run straight C16 and I could run 25-26lbs reliably but I don't measure my AF.
Thanks,
Brian
C16 is very potent. If you wanted to get max power, you'd do straight C16 with a C16 tune. If you just wanted extra power without retuning and without pushing the car to the max, you could do a 50/50 mix of C16/93 and run 25-26psi all day long at the drag strip. You could probably even get away with a 3:1 ratio of 93:C16, since it's so potent, but it really depends on how you plan to use this.
C16 is very potent. If you wanted to get max power, you'd do straight C16 with a C16 tune. If you just wanted extra power without retuning and without pushing the car to the max, you could do a 50/50 mix of C16/93 and run 25-26psi all day long at the drag strip. You could probably even get away with a 3:1 ratio of 93:C16, since it's so potent, but it really depends on how you plan to use this.
David is very conservative and safe when giving out advice like this, so you can expect recommendations on the low end of the spectrum. Some would tell you to run 34psi on 100oct or so, but I think 25-26 is perfectly ok with a mix of C16 and 93. I have never used higher than 112 in my Evo, and it was always mixed with either 91 or 93 while running 25psi or so. I run 26.5psi daily on alky + 91, so...
David is very conservative and safe when giving out advice like this, so you can expect recommendations on the low end of the spectrum. Some would tell you to run 34psi on 100oct or so, but I think 25-26 is perfectly ok with a mix of C16 and 93. I have never used higher than 112 in my Evo, and it was always mixed with either 91 or 93 while running 25psi or so. I run 26.5psi daily on alky + 91, so...
Have a good weekend,
