will 114 octane kill my car?
06-13-2003, 08:31 AM
#1
Guest
Posts: n/a
will 114 octane kill my car?
hello i have a vf22,FMIC, piggyback unichip, uppipe, turboback, stock injectors and high flow downpipe, cold air intake and other suspension stuff. what gas should i use? the track has 114 octane. i know that 1/4 of tank is good for weight but what is the combination i should use with 93 gas? will goign 114 kill my car? its a major competition in baton rouge,la and i want to do good.
Any advice on winning or at least not looking a a jackass?
1/4 mile tricks i should know??
thanks
tarak
Any advice on winning or at least not looking a a jackass?
1/4 mile tricks i should know??
thanks
tarak
06-16-2003, 11:54 PM
#5
VIP Member
Join Date: Nov 2002
Location: colorado
Posts: 79
some details
First, a VF-22 really should have STi injectors to support it, you will be pushing the injectors pretty hard if you run any significant boost. At around 280 hp at the crank you will be running 100% duty cycles on the stock injectors.
Don't run with only 1/4 tank of gas, several folks have logged fuel lean outs with low fuel in the tank during hard acceleration/cornering. run a min of 1/3 to 1/2 tank to prevent the fuel pickup from sucking air during hard launches.
Leaded fuel will kill your Cats if you still have them, and will also poison the O2 sensor and make it slow to respond. That will eventually force you to replace it and they are not cheap.
You should be able to find 100 Octane unleaded, use that. A little extra octane when racing is very cheap insurance against detonation. If all your interested in is performance run as much octane as you can your engine and ECU will like you for it. If given 50 - 60 miles of driving ahead of time the ECU will improve your ignition advance settings quite a bit, especially in the midrange rpm where you make max torque.
If you want to mix high octane with 93 to save a buck or two, I would suggest at least a 2 gal High octane to 1 gal 93 octane mix. A 50 / 50 mix won't get you all that much increase in power but will provide some resistance against detonation.
The 2:1 mix will give you about 97 - 98 octane blend if you use 100 / 93 for the mix. A 50/50 mix will give you about a 96 - 97 octane blend.
Do a search on launch techniques, there is a lot of info out there. If you get it right you should be cutting 60' times below 1.9 sec., very few consistantly get into the 1.7x 60' times.
Run the stock 16" wheels if you can, the 17's and especially the 18's will cost you time in the 1/4 because they are heavy.
Start out with tire pressures near 35 psi and work from there. Many people get their best times at tire pressures around 35.
Take as much crap out of the car as you can, spare tire, jack etc.
Take some time between runs to let the car cool with hood up. Lots of folks spray down the TMIC with a spray bottle to help it cool, just be sure you don't get so much water on it that you drip on the track.
Pull around the water box, and don't waste time doing a burn out (or trying to that is -- ) it won't help your traction, and its very hard on the tranny.
If you can watch a few runs by other folks before you make your first run, you will learn a lot by just watching a few people go through the staging process, and get a feel for the tempo of things at that track.
Larry
Don't run with only 1/4 tank of gas, several folks have logged fuel lean outs with low fuel in the tank during hard acceleration/cornering. run a min of 1/3 to 1/2 tank to prevent the fuel pickup from sucking air during hard launches.
Leaded fuel will kill your Cats if you still have them, and will also poison the O2 sensor and make it slow to respond. That will eventually force you to replace it and they are not cheap.
You should be able to find 100 Octane unleaded, use that. A little extra octane when racing is very cheap insurance against detonation. If all your interested in is performance run as much octane as you can your engine and ECU will like you for it. If given 50 - 60 miles of driving ahead of time the ECU will improve your ignition advance settings quite a bit, especially in the midrange rpm where you make max torque.
If you want to mix high octane with 93 to save a buck or two, I would suggest at least a 2 gal High octane to 1 gal 93 octane mix. A 50 / 50 mix won't get you all that much increase in power but will provide some resistance against detonation.
The 2:1 mix will give you about 97 - 98 octane blend if you use 100 / 93 for the mix. A 50/50 mix will give you about a 96 - 97 octane blend.
Do a search on launch techniques, there is a lot of info out there. If you get it right you should be cutting 60' times below 1.9 sec., very few consistantly get into the 1.7x 60' times.
Run the stock 16" wheels if you can, the 17's and especially the 18's will cost you time in the 1/4 because they are heavy.
Start out with tire pressures near 35 psi and work from there. Many people get their best times at tire pressures around 35.
Take as much crap out of the car as you can, spare tire, jack etc.
Take some time between runs to let the car cool with hood up. Lots of folks spray down the TMIC with a spray bottle to help it cool, just be sure you don't get so much water on it that you drip on the track.
Pull around the water box, and don't waste time doing a burn out (or trying to that is -- ) it won't help your traction, and its very hard on the tranny.
If you can watch a few runs by other folks before you make your first run, you will learn a lot by just watching a few people go through the staging process, and get a feel for the tempo of things at that track.
Larry
06-18-2003, 08:12 AM
#6
Guest
Posts: n/a
thanks alot for the info. i did really bad for the first time at the track. my best time was a 14.0 flat. i cant launch right. i witnessed a bad *** wrx lose its first gear. the guy was redlining it and dropping it. a stock wrx beat me. but i think someting is wrong with my ecu because it acted funny. the rev needle went to 7 rpms and then went back to 5 rpm. maybe over boost. i was messing with the balance on my profec B. can some explain the sparp and mild balnce??
08-03-2003, 09:15 PM
#9
Registered User
Join Date: Apr 2003
Location: Cleveland, TN
Posts: 121
Car Info: 03 WRX silver
another thing my stock injectors are running rich with a turbo running faster than the vf22. Im running 18psi with 110 octane and my 02 sensor is fine. All my cats are gone too
08-04-2003, 10:18 PM
#10
Old School
iTrader: (6)
Join Date: Jan 2001
Location: Union City
Posts: 14,983
Car Info: '99 RBP GM6
Originally posted by EvoEater
another thing my stock injectors are running rich with a turbo running faster than the vf22. Im running 18psi with 110 octane and my 02 sensor is fine. All my cats are gone too
another thing my stock injectors are running rich with a turbo running faster than the vf22. Im running 18psi with 110 octane and my 02 sensor is fine. All my cats are gone too
It would seem to me that the stock turbo at 18psi is putting out a lot of hot air. You are getting away with it cause of the high octane gas, however, be careful, it won't take much now to blow your engine.
Happy tuning,
-Gagan
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