how much HP capable with 91 octane w/ std meth injection ?
how much HP capable with 91 octane w/ std meth injection ? curious how far you guys have gotten on 91 with a single fogger methanol injection kit.
Currently on an MPT70 Turbo at 649 WHP 667 tq..
considering going to a BW S475 but it'd be pointless if i can only pull out another 50 WHP out of it and lose out on a TON of low and midrange that I currently have.
Currently on an MPT70 Turbo at 649 WHP 667 tq..
considering going to a BW S475 but it'd be pointless if i can only pull out another 50 WHP out of it and lose out on a TON of low and midrange that I currently have.
its more a function of CID
people claim 800 1000+ around here on pump gas alone, but back in the day when i was trying to be cool like that i melted pistons and got over it.
nowadays i dont let it go over 17psi without better fuel, 17 still plenty for a 9 second pass so i don't see it as a problem.
people claim 800 1000+ around here on pump gas alone, but back in the day when i was trying to be cool like that i melted pistons and got over it.
nowadays i dont let it go over 17psi without better fuel, 17 still plenty for a 9 second pass so i don't see it as a problem.
not going to oversize my turbo for the sake of intake temps, have meth and ice water'd intercooler that do a nice job of holding the iat's in the 70's
i run 14 on pump only 17 on pump and meth and anything higher which has been to 23 goes with 104 unleaded or whatever the house brand happens to be of leaded.
i run 14 on pump only 17 on pump and meth and anything higher which has been to 23 goes with 104 unleaded or whatever the house brand happens to be of leaded.
Launching!
Joined: Oct 2005
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From: Northern Chicago
The power capability of a pump/meth set-up is directly proportional to how much meth you're spraying and how willing you are to turn the boost up.
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Staging Lane
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not going to oversize my turbo for the sake of intake temps, have meth and ice water'd intercooler that do a nice job of holding the iat's in the 70's
i run 14 on pump only 17 on pump and meth and anything higher which has been to 23 goes with 104 unleaded or whatever the house brand happens to be of leaded.
i run 14 on pump only 17 on pump and meth and anything higher which has been to 23 goes with 104 unleaded or whatever the house brand happens to be of leaded.
9 Second Club
Joined: Feb 2002
Posts: 985
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From: Lake Orion, MI
MM right though that 17psi is the reasonable max for 91-94 octane on meth. You need to balance boost and timing for your combo though and not treat this as a hard and safe rule.
I've pushed it to 19psi on 94 octane and meth but it was on a relatively cool day running ice. Either way it should be plenty for mid to high 9s with the right combo.
Rick
I've pushed it to 19psi on 94 octane and meth but it was on a relatively cool day running ice. Either way it should be plenty for mid to high 9s with the right combo.
Rick
Staging Lane
Joined: Oct 2005
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So why can't the LS engines run higher boost on pump and meth? The import guys run 30+ psi on it. I know the pistons are bigger, so that will mean it takes the flame front longer to travel and I am sure the heads aren't as efficient as the imports. I am going to be building an LS based car soon and I am trying to learn as much as I can to get a good setup. What kind of timing are you guys running?
