01-19-2023, 06:46 PM | #1 |
Drives: ´18 ZL1 A10 Red Hot 😍 Join Date: Jan 2016
Location: Madrid, SPAIN
Posts: 347
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Help and advice with build and porting
Hello,
I post this here hoping to have better luck with answers than I had with the ZL1 forum (0 replies)... -- Finishing my build and I am thinking about doing the supercharger porting. After reading tens of threads from this forum, the v8 LT1 & bolt-ons and the Forced Induction one, I have some questions about this upgrade and the mods added. First of all, the car will be street used with 3 or 4 small road courses per year, so these are the mods done now... "Stage 1": Spark plugs ltr71x-11 AEM Wideband Headers 1"7/8 Stainless Power with ceramic coating Longtube catless 3" with handmade X-pipe 2x vibrant 1795 18" resonators Stock muffler ATI Balancer 918856 ATI overdrive 916227 9,17" (+15%) Belt K08045HD ADM intercooler reservoir V2 CAI Rotofab BigGulp TB 95mm LT5 (sold when the new one arrives) Elite E2-X catch can Upgraded oil pump and tensioner chain. Coming just now from your country and as a "stage 2": C&R oil radiator #325-CR-UC-SQC014B Oil Filter Sandwich Plate with 212ºF Thermostat -10AN FI Interchiller with LT4/LT5 Blower Spacer Plates + thermal blanket + PCV valve CWA400 Intercooler Pump -16AN converted Banks iDash SuperGauge 1LE steering air vents. My tuner is from EU, but this time I will hire remote tuning from EEUU. Having doubts about the tuner (Pray, Jannetty or Elite), but this is another story. -- Knowing that here in Spain we don't have E85, just only equal to your 93 pump gas and for reasons that are now irrelevant I don't want to modify the fuel system of the car, leaving it stock and reach the maximum power that I can without modifying it, next upgrade is the supercharger porting with the 103 NW TB. About the porting, here are my questions: - With stock fuel and only down pulley, will you do the "Stage X" upgrade? Greg recommends it, but it's his business... - Will you add the rebuild option? 650$ seems a lot assuming Synergy explains it's about 100$ the real cost (https://synergymotorsports.com/blogs...veryone-misses). - If not, it's possible to do it yourself when you receive the supercharger? Will you do it? - Doing the port and bearing the handicap of the stock fuel system, will you stay with the 15% pulley or do you recommend a "downgrade" to 10%? - Will you tune the TCM even if I don't expect to reach more than 680whp aprox? Thank you for reading this and thank you again if you take your time to give me your advice or a new recommendation
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First ZL1 in Spain (Madrid)! Red Hot, A10, PDR, carbon fiber hood & grounds effects...
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01-20-2023, 09:07 AM | #2 |
Drives: 2015 Camaro ZL1 Join Date: Oct 2020
Location: Clinton Twp, Michigan
Posts: 246
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You will likely be hard up against the limits of the HPFP with the X-port and current 15% lower.
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01-20-2023, 11:19 AM | #3 |
Drives: '20 ZLE Join Date: Jun 2020
Location: Mile High
Posts: 3,558
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Follow KaTech's advice. FWIW, in terms of a reference for the OEM FP, mine makes around 850 actual wheel with a 10% lower, 3000 rail psi, and DSX low side, 80 psi.
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'20 ZL1 1LE A10,
OEM short block, LME heads/valve train, E2650. 100+ octanes, no eth, no meth, no N2O. 2/23 - 1031/1004 wheel. 4/23 - 1.41/9.61/145 at DA 7000 ft. (only made five passes). 2/24 - LME 390, E2650, FBO, 100 oct.; 1116hp/ 1063tq; 109 oct. dyno next. |
01-20-2023, 05:42 PM | #4 | ||
Drives: ´18 ZL1 A10 Red Hot 😍 Join Date: Jan 2016
Location: Madrid, SPAIN
Posts: 347
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Quote:
Quote:
So now I have these options: 1) standard port retaining 15% pulley (don't know why, but it's the one my mind is telling me to reject directly) 2) standard port downgrading to a 10% pulley 2) x-port with a 10% pulley or even 5%... Which one do you recommend for 93 oct and stock fuel system? @Katech_Mike as I asked a year ago to your shop by mail and they told me they don't do remote tuning. Right now is the same answer? Thank you again.
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First ZL1 in Spain (Madrid)! Red Hot, A10, PDR, carbon fiber hood & grounds effects...
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01-21-2023, 08:49 AM | #5 |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,796
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Do the X port...especially for 93 octane. You will pick up 3-4 psi on stock pulleys and it won't run any hotter.
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2016 NFG 1SS A8
Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA |
01-21-2023, 05:19 PM | #6 |
Drives: '20 ZLE Join Date: Jun 2020
Location: Mile High
Posts: 3,558
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I'm sure Katech has good reasons to not do remote tuning, but my ZL1 is remote tuned by KingLT1. My 2013 and 2016 GTRs were also remote tuned. There's a bunch of remote tuning going on nationwide.
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'20 ZL1 1LE A10,
OEM short block, LME heads/valve train, E2650. 100+ octanes, no eth, no meth, no N2O. 2/23 - 1031/1004 wheel. 4/23 - 1.41/9.61/145 at DA 7000 ft. (only made five passes). 2/24 - LME 390, E2650, FBO, 100 oct.; 1116hp/ 1063tq; 109 oct. dyno next. Last edited by JSH; 01-21-2023 at 07:06 PM. |
01-21-2023, 05:51 PM | #7 |
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 4,749
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I think remote tuning can definitely work, it’s just nice to be on the dyno to develop the base tune (90-95% completion) then use remote tuning to finish it off. It’s tough to tune cars at the 800+ WHP level on the street, that’s for damn sure!
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2017 Chevy Camaro 2SS A8 Whipple 3.0, Mast Black Label heads, Fore triple in-tank pumps, 112mm TB, LPE +52% injectors, LPE BB HPFP, 15” conversion 1059 WHP/944 WTQ, 9.48@150
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01-21-2023, 07:12 PM | #8 |
Drives: '20 ZLE Join Date: Jun 2020
Location: Mile High
Posts: 3,558
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Of course tuning at the track is best. We're waiting on the snow to melt so I can get the car to the dyno.
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'20 ZL1 1LE A10,
OEM short block, LME heads/valve train, E2650. 100+ octanes, no eth, no meth, no N2O. 2/23 - 1031/1004 wheel. 4/23 - 1.41/9.61/145 at DA 7000 ft. (only made five passes). 2/24 - LME 390, E2650, FBO, 100 oct.; 1116hp/ 1063tq; 109 oct. dyno next. |
01-23-2023, 09:46 AM | #9 |
Drives: 2015 Camaro ZL1 Join Date: Oct 2020
Location: Clinton Twp, Michigan
Posts: 246
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