Just can't break the 200hp mark!
10-17-2010, 07:16 PM
#1
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Just can't break the 200hp mark!
So for the past two years i have been trying to break 200hp mark. And just cant do it. My setup: Begi cast iron mani, gt2554, mspnp, custom 3" dp and exhaust. small ebay intercooler( feeling like thats the issue). Step colder plugs. 600cc injectors, walbro pump, manual boost controller.
The car is tuned by me on e85 at about 12psi peak boost. Timing is set at about 20 degrees at peak boost. And afrs are at 11.5 and taper down to 10.5 at peak boost (feel like quite a bit too rich for e85). At peak boost my MAT was at 98 degrees, which i dont think is that hot, right?
Yesterday i did 193hp and 180 torque. I was really hoping to break the 200hp mark.
So whats going on? Am i being way too conservative with timing and afrs?
The car is tuned by me on e85 at about 12psi peak boost. Timing is set at about 20 degrees at peak boost. And afrs are at 11.5 and taper down to 10.5 at peak boost (feel like quite a bit too rich for e85). At peak boost my MAT was at 98 degrees, which i dont think is that hot, right?
Yesterday i did 193hp and 180 torque. I was really hoping to break the 200hp mark.
So whats going on? Am i being way too conservative with timing and afrs?
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10-17-2010, 07:28 PM
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Yeah... that was at like highest reading dynojet. I do think i need bigger IC a little leaner, i know people run 12s on e85. I have no idea whats safe timing for my car.
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10-17-2010, 07:31 PM
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I made 198hp on a stock msm turbo on pump gas, regular 93 octane 4 years ago. So it would seem I know more then you do.
Look at all the threads with people running e85, they are running 1000cc injectors for a reason. E85 does not have the same amount of energy in it as normal fuel, this is fact. Run 11.9 afr on normal fuel at the boost level you are at and you will probably make more power.
Look at all the threads with people running e85, they are running 1000cc injectors for a reason. E85 does not have the same amount of energy in it as normal fuel, this is fact. Run 11.9 afr on normal fuel at the boost level you are at and you will probably make more power.
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10-17-2010, 07:33 PM
#7
Want fries with that?
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Aricjm15, the guys running 1000cc injectors are also running 300rwhp beasts.
Oh, and good job, you (nearly) maxed out a turbo. Woo-hoo for you
Post maps.
Oh, and good job, you (nearly) maxed out a turbo. Woo-hoo for you
Post maps.
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10-17-2010, 07:37 PM
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I made 198hp on a stock msm turbo on pump gas, regular 93 octane 4 years ago. So it would seem I know more then you do.
Look at all the threads with people running e85, they are running 1000cc injectors for a reason. E85 does not have the same amount of energy in it as normal fuel, this is fact. Run 11.9 afr on normal fuel at the boost level you are at and you will probably make more power.
Look at all the threads with people running e85, they are running 1000cc injectors for a reason. E85 does not have the same amount of energy in it as normal fuel, this is fact. Run 11.9 afr on normal fuel at the boost level you are at and you will probably make more power.
11.9 on pump in boost is dangerously lean. At 12afr you are a very close step away from detonation. I would rather loose a few hp then have bent rods and holes in pistons.
11.9 on e85 is about right.
e85 is way better for turbo application, and thats a fact. lower egts, higher octane rating, cooler combustion and ability to run more boost.
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10-17-2010, 07:38 PM
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Copied from wikipedia
E85 stoichiometric 9.765
E85 max power rich 6.975
E85 max power lean 8.4687
http://en.wikipedia.org/wiki/E85_in_...tio_comparison
E85 stoichiometric 9.765
E85 max power rich 6.975
E85 max power lean 8.4687
http://en.wikipedia.org/wiki/E85_in_...tio_comparison
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10-17-2010, 07:41 PM
#11
There was actually a thread a while back that discussed the affects of using other fuels with different stoich ratios (meth, E85, etc). If I remember correctly it was determined that, despite what the gauge tells you, the wideband is not really reading an AFR but is instead reading a stoichiometric mixture ratio. I think the general consensus was that no matter what fuel you were running you would want to tune to a similar "AFR" readout on the gauge, as you were actually tuning to the ratio above or below stoich rather than a true "AFR". (If that makes any sense, man I wish I could find the thread now)
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10-17-2010, 07:45 PM
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There was actually a thread a while back that discussed the affects of using other fuels with different stoich ratios (meth, E85, etc). If I remember correctly it was determined that, despite what the gauge tells you, the wideband is not really reading an AFR but is instead reading a stoichiometric mixture ratio. I think the general consensus was that no matter what fuel you were running you would want to tune to a similar "AFR" readout on the gauge, as you were actually tuning to the ratio above or below stoich rather than a true "AFR". (If that makes any sense, man I wish I could find the thread now)
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10-17-2010, 07:46 PM
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There was actually a thread a while back that discussed the affects of using other fuels with different stoich ratios (meth, E85, etc). If I remember correctly it was determined that, despite what the gauge tells you, the wideband is not really reading an AFR but is instead reading a stoichiometric mixture ratio. I think the general consensus was that no matter what fuel you were running you would want to tune to a similar "AFR" readout on the gauge, as you were actually tuning to the ratio above or below stoich rather than a true "AFR". (If that makes any sense, man I wish I could find the thread now)
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10-17-2010, 09:44 PM
#15
Aricjm15 just stfu
gauge will read correct for gas as it will for e85. everything else doesn't ******* matter. you read the wbo2, adjust for stoich out of boost and mid to high 11's in boost and that's it.
stop muddying up this thread with useless bullshit.
Rushin the biggest reason you don't make power is cause you're being a *****.
10.5 with e85 is way too rich.
also post your timing map. I'll bet its beyond conservative as well.
get the afr's into high 11's and "man up" the timing map and you'll be at 210-220 easy IMO
gauge will read correct for gas as it will for e85. everything else doesn't ******* matter. you read the wbo2, adjust for stoich out of boost and mid to high 11's in boost and that's it.
stop muddying up this thread with useless bullshit.
Rushin the biggest reason you don't make power is cause you're being a *****.
10.5 with e85 is way too rich.
also post your timing map. I'll bet its beyond conservative as well.
get the afr's into high 11's and "man up" the timing map and you'll be at 210-220 easy IMO
Last edited by 18psi; 10-17-2010 at 11:36 PM.
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10-17-2010, 10:20 PM
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I don't think my afrs really go much lower than 10.5. If the weather stays good I will try to bump up the afrs and maybe add one or two degree of timing.
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