Base tune for my turbo setup.
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From: Nashville, TN
Base tune for my turbo setup. Hello all. My car is almost done and I'm modifying my LS1 Edit file to flash my computer to compensate for the 42# injectors and adjust the timing. I adjusted the injector flow rate using an excel template(http://www.blackls1ta.com/Tools/JohnsInjectorCalc.xls). I adjusted my timing to 15 degrees max, starting at .72 gms/cyl @ 3200 RPM all the way up to 1 gms/cyl @ 8000 rpm.
I have a vig 3200 stall converter and stage III heads/TR224 cam and a Turbo Technology T60 turbo kit. Motor is a forged 346 (Eagle H-beam rods and JE pistons), cometic head gaskets. I plan on starting off @ 7-9lbs of boost. This is my break in tune and I don't want to risk grenading the motor until I get it on a dyno. Is this tune safe for now?
I have a vig 3200 stall converter and stage III heads/TR224 cam and a Turbo Technology T60 turbo kit. Motor is a forged 346 (Eagle H-beam rods and JE pistons), cometic head gaskets. I plan on starting off @ 7-9lbs of boost. This is my break in tune and I don't want to risk grenading the motor until I get it on a dyno. Is this tune safe for now?
Re: Base tune for my turbo setup. dont forget to move up your maf fail freq. just in case you get to it. im sure that that approach will be safe starting off, but why not start off around 4-5psi? Or do you have lowered compression?
i would not be so ultra conservative with the timing, it may cause some breakup under load, at least it did for me with < 9:1
what is your pe/rpm table right now? did you add 5-7% to drop the a/f ratio for fi?
what plugs are in it? tr6's at .035?
i would not be so ultra conservative with the timing, it may cause some breakup under load, at least it did for me with < 9:1
what is your pe/rpm table right now? did you add 5-7% to drop the a/f ratio for fi?
what plugs are in it? tr6's at .035?
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From: Nashville, TN
Re: Base tune for my turbo setup.
dont forget to move up your maf fail freq. just in case you get to it. im sure that that approach will be safe starting off, but why not start off around 4-5psi? Or do you have lowered compression?
i would not be so ultra conservative with the timing, it may cause some breakup under load, at least it did for me with < 9:1
what is your pe/rpm table right now? did you add 5-7% to drop the a/f ratio for fi?
what plugs are in it? tr6's at .035?
i would not be so ultra conservative with the timing, it may cause some breakup under load, at least it did for me with < 9:1
what is your pe/rpm table right now? did you add 5-7% to drop the a/f ratio for fi?
what plugs are in it? tr6's at .035?
I have lowered compression (9:1 with cometic head gaskets)
Should I raise my timing a little bit, to like 18* ? pe/rpm table is stock right now. Does PE/RPM table go into effect only @ WOT? I won't be tuning WOT until I schedule a dyno session with TEA. Should I add 5-7% just for good measure? Plugs are ngk tr6's gapped @ .035.
Thanks for your help
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Joined: Apr 2002
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From: Austin, TX
Re: Base tune for my turbo setup. I'm a little confused. Why are you worried about timing... if you are just going to keep the car in closed loop... You will never see the range that you are adjusting for.
If you are going to get into it a bit, you also need to worry about 2 other things.
1. when PE is activate (this needs to be adjusted on a turbo)
2. when the MAF maxes out (you need to add fuel in PE vs RMP at this point)
You really don't need to worry about any of this if you are just going to baby the car around until you get it on the dyno.
The only thing to worry about for light throttle is the injector flow rate stuff.
One more thing, has anyone had good results lowering compression on an ls1 via a thicker head gasket. It seems like a really bad idea to me.
If you are going to get into it a bit, you also need to worry about 2 other things.
1. when PE is activate (this needs to be adjusted on a turbo)
2. when the MAF maxes out (you need to add fuel in PE vs RMP at this point)
You really don't need to worry about any of this if you are just going to baby the car around until you get it on the dyno.
The only thing to worry about for light throttle is the injector flow rate stuff.
One more thing, has anyone had good results lowering compression on an ls1 via a thicker head gasket. It seems like a really bad idea to me.
Re: Base tune for my turbo setup. he said 7-9psi, that isnt babying it to me.
i think 17* is safe for 8psi starting off sure.
i have a 98 car with around your compression, would you like to see my edit file? email me for it.
also power enrichment comes in before wide open on the pedal.
i think 17* is safe for 8psi starting off sure.
i have a 98 car with around your compression, would you like to see my edit file? email me for it.
also power enrichment comes in before wide open on the pedal.
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TECH Apprentice
Joined: Apr 2002
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From: Austin, TX
Re: Base tune for my turbo setup. Ok, now I understand. I was just confused by the statement saying he would not go WOT until it was on the dyno. I usually think of WOT as being synonymous with PE mode.
You just need to understand that an FI car can be in WOT type (in need of major fuel enrichment) conditions without much of your foot into it.
You just need to understand that an FI car can be in WOT type (in need of major fuel enrichment) conditions without much of your foot into it.
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From: Las Cruces, NM
Re: Base tune for my turbo setup. From the factory WOT at low rpms is 62 percent throttle and higher rpms its 26 percent (or close to that). You really don't have to tweak the enable percentages to much. You do wan't to richen it up with the PE tables though.
Gary
Gary
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From: Nashville, TN
Re: Base tune for my turbo setup.
Ok, now I understand. I was just confused by the statement saying he would not go WOT until it was on the dyno. I usually think of WOT as being synonymous with PE mode.
You just need to understand that an FI car can be in WOT type (in need of major fuel enrichment) conditions without much of your foot into it.
You just need to understand that an FI car can be in WOT type (in need of major fuel enrichment) conditions without much of your foot into it.
Re: Base tune for my turbo setup. oh btw if you are confused by the crazy look of my pe table, the slope you see starting at 3600 is because that is where i outflow the max maf value the computer can read. so if you do a direct copy odds are your car will go rediculously rich past 3600 with 7psi.
also i'll mention if you didnt know that i have a rising rate regulator, thats why my injector flowrate table has no slope.
also i'll mention if you didnt know that i have a rising rate regulator, thats why my injector flowrate table has no slope.