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#31
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Phil is probably getting good power because he is keeping the boost low. Using race fuel will also help, less tendency to detonate. As Mychailo says, the fine water spray mist helps cool the charge, which in turn reduces detonation, and lets the ECU run things without retardation. This gives more power. Water is actually better than methanol, because it requires more energy to evapourate it than methanol does. Thus it absorbs more heat, cools the cylinders better. Methanol on the other hand will improve the Ron rating of the fuel mixture, so is a help to improve the burn rate of the mixture, as well as absorbing heat. For ordinary road use, a mix somewhere between 25% and 50% methanol would be a good compromise, but pure water would be 100% OK at lowish boost levels. If you are going to very high boost levels, 10-15-20 lbs, the sheer amount of heat you are adding here [which is also a function of the efficiency of your blades, not just based on the pressure you are adding], this heat is not possible to remove by water injection alone, at least not without high pressure pumping of large volumes. This is just not practical. The sensible route is probably to lower the CR for higher boost. In addition, water injection is probably easier to install on our SVXs for boosts in the 6-10 lbs region, and would not need a huge reservoir. You will probably need both injection and an IC if you go for higher boost levels. Joe
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#32
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I run 3.5-4lbs of boost on pump gas and 6psi on race fuel,just to make sure i am not pulling timing. I ran about 60 miles on 6psi without high octane fuel and experienced no timing retard, but im sure given another variable that would be detrimental such as a hot day, i would most likely make less power with more boost. But, given the way the car is setup now, i really do love taking your same tq curve and then just pulling it up even higher If i do decided to lower the compression, ill be forced to go with a TEC-II or possibly program in an AEM, as the need for bigger injectors would be imperative. So for now, i cant say WI wouldnt hurt, but im enjoying endulging(and not over endulging) in boost, while keeping my car on the road phil
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~Phil Teal 1992 Subaru SVX Turbo - Sold in May 2011 to peace-frog. |
#33
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Hey Drewbaru, Im reffering to the ECUtune stage 2v5 engine management system. you can find info on it here: http://ecutune.com/svx-stage2.htm They are also desiging a blower kit, which you can see here: http://ecutune.com/svx-stage3.htm ~phil
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~Phil Teal 1992 Subaru SVX Turbo - Sold in May 2011 to peace-frog. |
#34
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thank you sir..
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#35
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how does this sound? I have access to 94 octane at the pump and whenever I want to have fun I add 1-1 1/2 pints of toluene to a full tank of 93 or 94. The toluene is basically pure concentrated octane boost. Could I theoretically run 6-8 lbs of boost with: a fmic, the 93 or 94 in the tank and adding the toluene to every tank, and a MSD Stacker. The toluene would reduce detonation, but wouldit be enough to allow for the additional boost? I really want to get between 6-8lb without changing the internals.
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Former: 1994 Barcelona Red(x2), 1995 Brilliant Red, 1992 Liquid Silver, 1992 Ebony(x2), 1992 Pearl White (x2) Current: 2017 Ford Raptor 2017 Kawasaki KLR 1995 Guards Red Carrera 1995 Spec-ish Miata - track car 1957 CJ-5 |
#36
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Did you ever consider using the Deltacams with your turbo set-up?
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Former: 1994 Barcelona Red(x2), 1995 Brilliant Red, 1992 Liquid Silver, 1992 Ebony(x2), 1992 Pearl White (x2) Current: 2017 Ford Raptor 2017 Kawasaki KLR 1995 Guards Red Carrera 1995 Spec-ish Miata - track car 1957 CJ-5 |
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