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04-12-2019, 10:56 AM
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#1 |
 Drives: Camaro Join Date: Apr 2019
Location: California
Posts: 249
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Tunner shoot out
Thought some people might find this interesting.
The red line is tuned by a very good tunner and the blue line is tuned by a very good tunner that specializes in the LT1. He accomplished the gains by pulling timing, leaning out the AFR, and narrowing the injector spary up top. He did some other things that he explained to me, but I didn't really understand them :_( He told me the old tune was excellent for someone that hasn't tunned many LT1s. To me the peak gains are very impressive but the overall curve much more. Just want to share for those that care. Thought some people might find this interesting. The red line is tuned by a very good tunner and the blue line is tuned by a very good tunner that specializes in the LT1. He accomplished the gains by pulling timing, leaning out the AFR, and narrowing the injector spary up top. He did some other things that he explained to me, but I didn't really understand them :_( He told me the old tune was excellent for someone that hasn't tunned many LT1s. To me the peak gains are very impressive but the overall curve much more. Just want to share for those that care. I'm told a stock corvette usually puts form 380-385 on that Dyno.
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2018 1SS 1LE
Intake, P&P IM and TB, off road X pipe, 1 7/8 headers, 3inch pipes to npp, E85 BMR upper control arms, BMR trailing arms 12.0 Last edited by TC2018SS1LE; 04-12-2019 at 11:54 AM. |
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04-13-2019, 05:08 AM
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#2 |
         Drives: 6th gen Join Date: Aug 2013
Location: US
Posts: 3,670
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Good data Thanks
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05-19-2019, 12:36 PM
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#3 |
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The Mechanic
Drives: 1SS M Join Date: Dec 2017
Location: NJ
Posts: 290
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Interesting. Injector spray? Hmm maybe i should mess with that
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BTR 225 w/CNC Heads|JLT intake|Speed Engineering 1"7/8 long tube and mid pipe|LT2 manifold w/95mmTb|Self tuned w/HPtuners|Silvers 2Way coilovers|Hotchkis front sway|Advan AD08R|BMR solid cradle bushings|Recaro SR7| Work ZR10 19"
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06-26-2019, 04:34 AM
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#4 | |
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Makis
Drives: 2020 Red Hot ZL1 A10 Join Date: Apr 2019
Location: London - UK
Posts: 806
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Quote:
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06-26-2019, 05:31 AM
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#5 | |
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Drives: 6th gen Join Date: Aug 2013
Location: US
Posts: 3,670
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Quote:
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06-26-2019, 06:06 AM
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#6 |
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Makis
Drives: 2020 Red Hot ZL1 A10 Join Date: Apr 2019
Location: London - UK
Posts: 806
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Of course not always. A tuner can advance timing up to certain point, depending on many parameters. The same goes when pulling timing. But advancing timing is a way to add power.
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06-26-2019, 07:23 AM
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#7 |
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Drives: 6th gen Join Date: Aug 2013
Location: US
Posts: 3,670
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I know you know but others may may not.
I think the first thing ppl that are used to other engines do is jack up the timing if there is no knock even if it doesn’t make more power. I had better results lowering in certain humidity. These resist knock beyond peak power in certain conditions |
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06-26-2019, 09:57 AM
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#8 |
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Drives: 17 Camaro SS 1LE & 16 Sierra AT CC Join Date: Nov 2016
Location: Norman, OK
Posts: 2,424
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Depending on the fuel the vehicle can run, reducing the timing may increase power. GM tuned the 6th gen on 93, so the timing map is pretty aggressive. This can result in knock, especially if you are on 91 octane.
You can pull some timing and it will help keep the knock under control which then keeps the car in the high octane table timing map instead of dropping into the low octane timing table map.
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2019 Corvette Z06 2LZ A8 - Halltech CAI, AWE non-catted X-pipe, Mamo V2 ported TB 592rwhp, bone stock 566rwhp
2017 Camaro SS 1LE - Procharger D1SC w/ Tial 2" BOV & Race intercooler / ARH full length catless headers / Alky meth injection system - 650rwhp on conservative tune SOLD |
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