help me tune please
Thread Starter
Drifting
Joined: Dec 2001
Posts: 1,313
Likes: 1
From: providence ut
help me tune please
OK the local tunner who doesn't know beans about supercharging is going to put the beast on the dyno and help me tune..here are my questions.....what air/fuel ratio at what psi boost am I shooting for........high 11/1 or low 12/1 seems high for one or two psi boost. those are the boost air fuel numbers for full boost(10psi)right? also with striaght meth how much less fuel if any.......whats the max advance you guys are getting with meth injections.....I know advance it until it knocks but were are you at?....thanks
P.S. what is the best N/A air/fuel ratio......this is just to see if he knows what he's doing .........he better know that one.
P.S. what is the best N/A air/fuel ratio......this is just to see if he knows what he's doing .........he better know that one.
Melting Slicks
Joined: Jan 2002
Posts: 3,293
Likes: 79
From: Jackson MI
I would shoot for 11.5 to be on the safe side. You can go for 12.0 to try and get a bit more power out of it, but if anything hickups you don't have much room to spare. N/A it should be around 13.0 a/f. And make sure that you are at that a/f when it goes into boost, no matter what the psi, because its not going to stay that small for long.
Timing depends on what you've got in your motor. Typically for an LT1 I've seen 26* for 7psi. But since you've got an older motor I'm not exactly sure what you should be shooting for. If you see any kind of knock turn it back a few degrees.
Meth will not change your a/f but it will change your timing numbers. It will allow you to run more timing without getting knock.
I hope this helps, good luck with the tuning and be sure to post some numbers when you get them.
Timing depends on what you've got in your motor. Typically for an LT1 I've seen 26* for 7psi. But since you've got an older motor I'm not exactly sure what you should be shooting for. If you see any kind of knock turn it back a few degrees.
Meth will not change your a/f but it will change your timing numbers. It will allow you to run more timing without getting knock.
I hope this helps, good luck with the tuning and be sure to post some numbers when you get them.
Thread Starter
Drifting
Joined: Dec 2001
Posts: 1,313
Likes: 1
From: providence ut
Originally Posted by mn_vette
I would shoot for 11.5 to be on the safe side. You can go for 12.0 to try and get a bit more power out of it, but if anything hickups you don't have much room to spare. N/A it should be around 13.0 a/f. And make sure that you are at that a/f when it goes into boost, no matter what the psi, because its not going to stay that small for long.
Timing depends on what you've got in your motor. Typically for an LT1 I've seen 26* for 7psi. But since you've got an older motor I'm not exactly sure what you should be shooting for. If you see any kind of knock turn it back a few degrees.
Meth will not change your a/f but it will change your timing numbers. It will allow you to run more timing without getting knock.
I hope this helps, good luck with the tuning and be sure to post some numbers when you get them.
Timing depends on what you've got in your motor. Typically for an LT1 I've seen 26* for 7psi. But since you've got an older motor I'm not exactly sure what you should be shooting for. If you see any kind of knock turn it back a few degrees.
Meth will not change your a/f but it will change your timing numbers. It will allow you to run more timing without getting knock.
I hope this helps, good luck with the tuning and be sure to post some numbers when you get them.
Last edited by lead foot 85 vet; Aug 20, 2006 at 08:58 PM.
