Dyno videos e85 sc300 day. Weak numbers?
12-13-12, 10:27 PM
#1
Dyno videos e85 sc300 day. Weak numbers?
Hey guys just got my car done tuning at battleground in Atlanta. Great people! Just thinking my numbers are really weak for my setup, below is a video. My last setup was mapecu2 with a masterpower t70 and a ar.96 #" downpipe 2 1/2 exhaust, 2 1/2 inch intercooler piping with 1000cc precision e85 on 27 psi made 619 rwhp and 532 rwtq. Weird i made more power with a milder setup.
My basic setup now is stock unopened 2jzgte, AEM v2 with all sensors, turbonetics hp72 (f1-65 wheel) ar. 70 divided housing, mc r154 trans, south bend custom clutch setup, full e85 fuel system, titan rail, dual wallys, 1600 cc bosch injectors, 3" exhaust, 3" intercooler piping. Car made 575 rwhp and 552 rwtq at 29 psi. He also was conservative on the timing and i believe the car was tuned to 11.5 afr's. Let me know what you think guys, he was saying I should get a bigger hotside which i agreed on, probably going with a precision 6766 and cams of course. Enjoy and lmk your opinion guys.
My basic setup now is stock unopened 2jzgte, AEM v2 with all sensors, turbonetics hp72 (f1-65 wheel) ar. 70 divided housing, mc r154 trans, south bend custom clutch setup, full e85 fuel system, titan rail, dual wallys, 1600 cc bosch injectors, 3" exhaust, 3" intercooler piping. Car made 575 rwhp and 552 rwtq at 29 psi. He also was conservative on the timing and i believe the car was tuned to 11.5 afr's. Let me know what you think guys, he was saying I should get a bigger hotside which i agreed on, probably going with a precision 6766 and cams of course. Enjoy and lmk your opinion guys.
Last edited by preston145; 12-13-12 at 10:50 PM.
12-14-12, 05:44 AM
#4
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The .70 divided rear housing is killing you.
I'll bet the manifold is glowing red after 1 pull on the dyno?
I'm on a 74mm with a 1.25 divided and make about 720 at 21 psi on E-85
I'll bet the manifold is glowing red after 1 pull on the dyno?
I'm on a 74mm with a 1.25 divided and make about 720 at 21 psi on E-85
12-14-12, 05:48 PM
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11.5 afr's on a dyno is a great target # for air fuels as a dyno typically does not replicate real world driving afr's and as such tuning to the optimal ragged edge on a dyno is nothing more than disastrous, for the street with lower IAT's from real air and true fresh air ingestion and a true engine loading.
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12-15-12, 05:24 AM
#9
11.5 afr's on a dyno is a great target # for air fuels as a dyno typically does not replicate real world driving afr's and as such tuning to the optimal ragged edge on a dyno is nothing more than disastrous, for the street with lower IAT's from real air and true fresh air ingestion and a true engine loading.
my original 1997 block still going strong after 5+ yrs of boosting so alpha must know what hes talking about
12-15-12, 06:19 AM
#10
It's all about the timing, which can be increased into the high 20-30 degree range on E85, that is where you make the power.
People who tune or work at a dyno know that you must always tune the car rich or "safe" so when you get on the street the load change doesn't lean the AFR out too much.
Most Dyno's have a load-brake setup so you can simulate hill load, constatnt load, etc.
People who tune or work at a dyno know that you must always tune the car rich or "safe" so when you get on the street the load change doesn't lean the AFR out too much.
Most Dyno's have a load-brake setup so you can simulate hill load, constatnt load, etc.
12-15-12, 06:21 AM
#11
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I have to agree with that. I would rather dependability and lose power for a few horses. My car was tuned at the same place with some similar mods. My afr is at 10.7 to 11.2 while in boost at either level, low or high. I think Batlground did an awesome job. My car has had zero problems with their tune... I give them two thumbs up.
12-15-12, 10:17 AM
#13
Wow you guys like it on the rich side nothing wrong with being safe though, I have run all of my evo's on 12.0 afr as well as my supra all of which were on pump 93 however I never kept the car so I can't say how they lasted but they always made great whp on pump and either ran low 11's (evo) or high tens (supra) in the 1/4 mile.
All of my cars were street tuned and only dynoed for the numbers only.
All of my cars were street tuned and only dynoed for the numbers only.
12-15-12, 02:33 PM
#14
It's all about the timing, which can be increased into the high 20-30 degree range on E85, that is where you make the power.
People who tune or work at a dyno know that you must always tune the car rich or "safe" so when you get on the street the load change doesn't lean the AFR out too much.
Most Dyno's have a load-brake setup so you can simulate hill load, constatnt load, etc.
People who tune or work at a dyno know that you must always tune the car rich or "safe" so when you get on the street the load change doesn't lean the AFR out too much.
Most Dyno's have a load-brake setup so you can simulate hill load, constatnt load, etc.
This. All I've read on e85 is that if you don't increase the timing you aren't taking full advantage of it. I can't verify the 20-30 degree range, but it does sound about right.