09-23-2023, 04:40 PM | #1 |
Drives: 2018 zl1 Join Date: Jan 2023
Location: CT
Posts: 53
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DO I need Injectors or fuel pump
Car is apart and want to make sure I do it right the first time.
That said mods are: 1-7/8 catted ARH headers Ported blower (Kong X-port) 2.5 (stock size pulley for now) NW 103 TB Roto Fab Big gulp Flex fuel E85 and pump (93) tune |
09-23-2023, 08:29 PM | #2 |
Snackbar Tuning
Drives: 2023 SGM ZL1 Join Date: Oct 2016
Location: Florida
Posts: 1,121
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You'll need a low side to run any sort of E content.
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09-23-2023, 09:03 PM | #3 |
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 4,761
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Yeah JMS booster at a minimum. Not far behind the low side will be the HPFP dropping off due to the stock cam.
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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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09-23-2023, 09:14 PM | #4 |
Drives: Chevrolet Camaro ZL1 Join Date: May 2022
Location: Concordia
Posts: 437
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What these guys said. ^^^
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2017 Red Hot ZL1 A10 - Apex ARC-8's, 305/ 325 PS4's, DSX 9.06 12% Pulley, NGK HR7 Ruthenium spark plugs, Katech Oil Pump, LME tensioner, DOD delete, Cam, MPI lid, Soler ported 87mm (91mm effective) TB, Granatelli SS plug wires, Cordes LTR reservoir, DMS T-stat housing, Borla X pipe, AFe NPP exhaust, Black Widow Angry Housewife/ Venom 250 mufflers, BMR engine mounts, Banks iDash, Lithium Battery, Course Motorsports phone mount, AEM X- Series, HP Tuners, JMS, E85, 13.6 psi
737 HP/ 779 TQ |
09-24-2023, 06:06 AM | #5 |
Drives: 19' ZL1 A10, w/pdr Join Date: Sep 2014
Location: S.W. ohio
Posts: 1,557
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The Kong X port needs to spin faster to make the gains you want so yes you will need to change pullies. Joshinator makes a good point about a cam change and go to a 38% fuel cam lobe when you do for the high side.
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BTR Stg II cam w/ 38% fuel lobe, ARH 2" headers into 3" w/cats, AWE Touring, Kong X port, Weapon X triple ht exchangers, NW 103, Rotofab big gulp, DSX lowside, TCM tune, BMR Lockout, Mustang dyno 720 rwhp, 634 rwtq on 93 pump.
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09-24-2023, 08:08 AM | #6 |
Drives: 2018 zl1 Join Date: Jan 2023
Location: CT
Posts: 53
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Kinda figured. I was just going to do E and headers then it spiraled... as I'm sure most of you know.
Really just looking to keep cooler temps when on track. Greg said to go with the X-port as it helps a lot with air temps, same with E. I'm having the hub changed for easier pulley swaps should I feel the need to drop down, but ill need cooling mods like a larger HX to make it through a track session. As long as it's not the injectors which I thought were good til about 750whp...since the blower is off and they are right there. Ill see what happens on the rollers, but ill add the pump to my cart. |
09-24-2023, 08:43 AM | #7 |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,801
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I have tuned a few Zl1's with those mods and they are limited to around E50 with stock high side, stock cam, and a JMS low side @ .84 lambda. They make around 680-700whp. If you do a cam then you can get to 760-780whp on E50. Want to run more E than you will need +30 injectors and LPE HPFP. Or do THP port injection.
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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 |
09-24-2023, 09:03 AM | #8 |
Drives: 2018 zl1 Join Date: Jan 2023
Location: CT
Posts: 53
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There is only one gas station in CT that I know to have E85. Ill only be running it on track days to help with temps and reduce the chances for detonation.
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09-24-2023, 09:10 AM | #9 |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,801
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Order a barrel of E98 and just mix it with your pump fuel and keep it around E50. Should last you a year unless you put a lot of miles on the car.
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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 |
09-25-2023, 09:45 AM | #10 |
Drives: 2019 Chevy Camaro ZL1 M6 Join Date: Jul 2019
Location: Sea level
Posts: 1,252
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I’m one of the cars King has tuned. Add the HPFP, +30 injectors and JMS booster and you can make 740whp on e50 using the stock pullies. It is not true that you need to spin the Stage X port faster to make power, if you are using e85. Pulley’s on 93 will just add more heat.
This route isn’t cheap but it’s a winning formula.
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Kong Stage X Port, NW103, LPE HPFP, XDI +30 Injectors, ARH Headers, Flex Fuel, JMS Booster, AWE Touring, Elite E2-X CC. Stock heads, stock cam, stock pulleys: Tuned by KingLT1. 740whp Uncorrected on e50
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09-26-2023, 08:19 AM | #11 |
Snackbar Tuning
Drives: 2023 SGM ZL1 Join Date: Oct 2016
Location: Florida
Posts: 1,121
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The X port on stock pulleys will make more power past 3500 RPM or so. But below that it will make less torque as air velocity slows down. It does make the car feel a little sluggish as boost is slower to build down there and on the hit. But since the car spends 99% of its time in the power band above 4800 RPM it will certainly be faster by a lot.
I think this is why people say there X port needs to be spun harder. I find that putting a 2.38 pulley on an X port blower makes up for the torque below 3500 rpm. |
09-27-2023, 12:34 PM | #12 | |
Drives: 2019 Chevy Camaro ZL1 M6 Join Date: Jul 2019
Location: Sea level
Posts: 1,252
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Quote:
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Kong Stage X Port, NW103, LPE HPFP, XDI +30 Injectors, ARH Headers, Flex Fuel, JMS Booster, AWE Touring, Elite E2-X CC. Stock heads, stock cam, stock pulleys: Tuned by KingLT1. 740whp Uncorrected on e50
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09-27-2023, 01:00 PM | #13 | ||
Snackbar Tuning
Drives: 2023 SGM ZL1 Join Date: Oct 2016
Location: Florida
Posts: 1,121
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Quote:
It's not a lot by any means and I would guess that maybe bone stock untuned to x port and tuned with stock pulley, the low end would still be more. But tuned OEM blower vs tuned X port is what I was referencing. PS, I'm sensitive and so is my butt |
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09-28-2023, 08:43 AM | #14 |
Drives: 2018 zl1 Join Date: Jan 2023
Location: CT
Posts: 53
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I really wouldn't mind a little less torque down low as I autox and road course the car. it will help me ease into the throttle without blowing the car sideways in the turns.
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