What Is Too Lean for S/C?
Originally Posted by Moddiction,Oct 7 2010, 03:14 PM
I see mid to high 12's with my vortech at redline. Would like it to be a bit richer but I'm not TOO worried with it as long as it doesn't get any leaner.
Mid to high 12's is perfectly fine with these types of superchargers, so 12.2 to 12.3 is fine IMO...
I ran my comptech non aftercooled kit when I had it at 8.7 pounds of boost and I was runnning high 12's in vtec.. I ran that way for 2 years daily driven and thousands of miles with zero problems.
I now currently run 18 pounds of boost on the same bottom end (Been boosted for close to 30K now) but with my Inline Pro turbo kit and I see AFR's in the 11.6 to 12.1 range normally.
I ran my comptech non aftercooled kit when I had it at 8.7 pounds of boost and I was runnning high 12's in vtec.. I ran that way for 2 years daily driven and thousands of miles with zero problems.
I now currently run 18 pounds of boost on the same bottom end (Been boosted for close to 30K now) but with my Inline Pro turbo kit and I see AFR's in the 11.6 to 12.1 range normally.
^Sweet. Thats good to hear! Mine was all messed up and actually ran mid 15's for a little while. Was very dumb but engine never had an issue somehow haha. Some engines these cars have!!
Originally Posted by TRBOKEV,Oct 7 2010, 08:12 PM
Mid to high 12's is perfectly fine with these types of superchargers, so 12.2 to 12.3 is fine IMO...
I ran my comptech non aftercooled kit when I had it at 8.7 pounds of boost and I was runnning high 12's in vtec.. I ran that way for 2 years daily driven and thousands of miles with zero problems.
I now currently run 18 pounds of boost on the same bottom end (Been boosted for close to 30K now) but with my Inline Pro turbo kit and I see AFR's in the 11.6 to 12.1 range normally.
I ran my comptech non aftercooled kit when I had it at 8.7 pounds of boost and I was runnning high 12's in vtec.. I ran that way for 2 years daily driven and thousands of miles with zero problems.
I now currently run 18 pounds of boost on the same bottom end (Been boosted for close to 30K now) but with my Inline Pro turbo kit and I see AFR's in the 11.6 to 12.1 range normally.
Your great where you are Johnny, but if you want to experiment leaning out a bit to see if you make more power, I would feel comfortable doing this as long as your above vtec afr is steady bellow 13's. Lower 12's is optimum and gives you a little leeway on the colder days. Unless you want to fiddle with your tune on the street depending on the seasonal temps, your going to have to find a happy medium, which my suggestion would be low/mid 12's on a 50-60 degree day like current. Ignore the afr spikes around vtec (unless they are touching mid 13's, which may trigger some slight detonation) If you take it out on a cold winter day in the 30-40's you will be in the upper 12's ...and on a hot summer day you will be mid 11's, this is my best estimation from my experience with a target in the low 12's about this time of year. From the coldest to the warmest months, you will fluctuate about a full point.
Results
WHP: 315 uncorrected / 313 STD
WTQ: 207 uncorrected / 205 STD
* 68.5 degrees, 45% humidity
I had baselined there 4 months ago and the temp was 66.92, and 57% humidity and only difference besides the SC, was 10W-40 oil now instead of 0W-30 oil and 1 range colder plugs and the delta was ~92 whp and ~48 wtq.
MY2005
Supercharger Kit: SOS Base/Stage 1 6 psi with AC
Supercharger: Paxton Novi 1220 oil-fed
Motor: F22c
Compression: 11:1 (Stock)
EMS: SOS FVM (piggyback)
Fuel: Chevron 92 octane with up to 10% ethanol
PSI: 5.89 according to dyno for this run
WHP: 315 uncorrected / 313 STD
WTQ: 207 uncorrected / 205 STD
Dyno: Dynojet 424xLC2
Additional Specs: ProFlow 64.25mm/70.1mm throttle body, Berk Technology 63.5mm test pipe, HKS Hi-Power 60mm dual exhuast, SOS sport clutch kit with AP1 flywheel, AMSOIL 10W-40, NGK Iridium IX Spark Plug BKR8EIX #2668, 18x9.5 BBS LMs with 255/35-18 Bridgestone RE-01Rs
I assume that's probably average/typical?
WHP: 315 uncorrected / 313 STD
WTQ: 207 uncorrected / 205 STD
* 68.5 degrees, 45% humidity
I had baselined there 4 months ago and the temp was 66.92, and 57% humidity and only difference besides the SC, was 10W-40 oil now instead of 0W-30 oil and 1 range colder plugs and the delta was ~92 whp and ~48 wtq.
MY2005
Supercharger Kit: SOS Base/Stage 1 6 psi with AC
Supercharger: Paxton Novi 1220 oil-fed
Motor: F22c
Compression: 11:1 (Stock)
EMS: SOS FVM (piggyback)
Fuel: Chevron 92 octane with up to 10% ethanol
PSI: 5.89 according to dyno for this run
WHP: 315 uncorrected / 313 STD
WTQ: 207 uncorrected / 205 STD
Dyno: Dynojet 424xLC2
Additional Specs: ProFlow 64.25mm/70.1mm throttle body, Berk Technology 63.5mm test pipe, HKS Hi-Power 60mm dual exhuast, SOS sport clutch kit with AP1 flywheel, AMSOIL 10W-40, NGK Iridium IX Spark Plug BKR8EIX #2668, 18x9.5 BBS LMs with 255/35-18 Bridgestone RE-01Rs
I assume that's probably average/typical?
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