Building boost using timing retard with LNC-2001.
Building boost using timing retard with LNC-2001. Hey guys,
I went ahead and bought an LNC-2001 hoping I could get my GT55 to spool quicker on the brake by pulling timing. Any ideas on how much I should pull to begin with? I know it's better for manual cars, but I was told it can be done with an auto...
I went ahead and bought an LNC-2001 hoping I could get my GT55 to spool quicker on the brake by pulling timing. Any ideas on how much I should pull to begin with? I know it's better for manual cars, but I was told it can be done with an auto...
So, right now I have about 20 degrees of advance and a 13.0AFR at 85kpa, which is atmospheric here in Colorado. It stays around that all the way to 105kpa, which is around 2psi.
It spools in about 5 seconds at 4800 feet where I live, but when we got her up to Bandimere, with a DA of 8500, it wouldn't spool at all on the t-brake. I figured I'd try this out.
It spools in about 5 seconds at 4800 feet where I live, but when we got her up to Bandimere, with a DA of 8500, it wouldn't spool at all on the t-brake. I figured I'd try this out.
So, right now I have about 20 degrees of advance and a 13.0AFR at 85kpa, which is atmospheric here in Colorado. It stays around that all the way to 105kpa, which is around 2psi.
It spools in about 5 seconds at 4800 feet where I live, but when we got her up to Bandimere, with a DA of 8500, it wouldn't spool at all on the t-brake. I figured I'd try this out.
It spools in about 5 seconds at 4800 feet where I live, but when we got her up to Bandimere, with a DA of 8500, it wouldn't spool at all on the t-brake. I figured I'd try this out.
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Joined: Oct 2007
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From: South Lyon, Michigan
Like Mike said, it has to have timing in it to help it come up on the converter.. otherwise it'll take a long time to come up, or won't at all.
Also, have to maybe consider a stator change in the converter if it's still coming up slow.
Also, have to maybe consider a stator change in the converter if it's still coming up slow.
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Well, I was just looking at a log. I was mistaken. It does have 30 degrees in it up until about 105kpa. 32 degrees at 95kpa. Damn.
I hope I can figure this out before May. I really don't want to see another 2.20 60ft time again. Lol.
I hope I can figure this out before May. I really don't want to see another 2.20 60ft time again. Lol.
Last edited by 98Zheadsncam; Jan 20, 2018 at 09:38 AM.
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Verdad Gallardo So, I believe anything over 85kpa is boost here at 4800 feet...It's a bit lower at the track at like 5800 not factoring in the DA.
It's got 30ish degrees until 105kpa, then it drops to 26degrees until 110kpa, 22 degrees after that, and 20 degrees at 120kpa, which is 5psi factoring in the 85kpa atmospheric here in colorado. This is around 3400rpm. High 12's to low 13's afr until 105kpa, then mid 11's at 120kpa.
I think if all else fails, I'll remove a significant portion of the downpipe, seeing as it's v-banded together. That should help with spool.
So, I believe anything over 85kpa is boost here at 4800 feet...It's a bit lower at the track at like 5800 not factoring in the DA.
It's got 30ish degrees until 105kpa, then it drops to 26degrees until 110kpa, 22 degrees after that, and 20 degrees at 120kpa, which is 5psi factoring in the 85kpa atmospheric here in colorado. This is around 3400rpm. High 12's to low 13's afr until 105kpa, then mid 11's at 120kpa.
I think if all else fails, I'll remove a significant portion of the downpipe, seeing as it's v-banded together. That should help with spool.
It's got 30ish degrees until 105kpa, then it drops to 26degrees until 110kpa, 22 degrees after that, and 20 degrees at 120kpa, which is 5psi factoring in the 85kpa atmospheric here in colorado. This is around 3400rpm. High 12's to low 13's afr until 105kpa, then mid 11's at 120kpa.
I think if all else fails, I'll remove a significant portion of the downpipe, seeing as it's v-banded together. That should help with spool.