06-08-2023, 07:54 AM | #29 |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,800
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The ECU uses the MAF all the time for fuel control. I think what you mean is the transition between closed to open loop PE mode.
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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 |
06-08-2023, 08:33 AM | #30 | |
Drives: Camaro Join Date: Mar 2016
Location: Michigan
Posts: 107
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Quote:
Was hoping to find a cheap fix vs a $1000. If I can't figure something out, I'll probably pick this up. I found a source for vacuum line restrictors, so I bought a bunch from .007" to .025" to see if it will slow down the action of the bypass valve |
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06-08-2023, 08:36 AM | #31 | |
Drives: Camaro Join Date: Mar 2016
Location: Michigan
Posts: 107
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Quote:
I can usually drive around the problem, but after dumping this money into the car, I shouldnt have to worry about low speed driving like I do. |
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06-08-2023, 08:44 AM | #32 | |
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 4,756
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Quote:
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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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06-08-2023, 08:54 AM | #33 | |
Drives: Camaro Join Date: Mar 2016
Location: Michigan
Posts: 107
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06-08-2023, 09:49 AM | #34 |
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 4,756
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I only retuned because I had swapped pulleys for more boost at the same time as the Smoothboost install back when I had my 2.9 Whipple. But I suspect your existing tune would be fine as is as you’re not making any major airflow changes.
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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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06-08-2023, 04:17 PM | #35 |
Drives: 2016 Camaro SS Join Date: Jul 2016
Location: Korea
Posts: 417
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Go with Smoothboost. Highly recommand for cam cars or high boosted PD blower cars. Simply all issues just gone.
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06-19-2023, 10:43 PM | #36 |
Drives: Camaro Join Date: Mar 2016
Location: Michigan
Posts: 107
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I just wanted to come back and post my results with the inline restrictor.
I bought some restrictors from here in various sizes: https://www.ocpneumatics.com/orifice...strictor-kits/ I got the 1/8 barbed restrictors and used 1/4 - 1/8 vacuum line adapters to splice them inline to the boost bypass. Running the .020 restrictor 100% solved every drivability issue I had with the Whipple. I am beyond ecstatic with how the car drives now. I used to have to drive really slow and wait for the boost to kick in or give it a decent amount of throttle and break the tire loose. Anything in between would cause the car to studder/hesitate when the bypass valve closed. My AFR would go to 1.2-1.3 and the car would stumble until I let off the gas and got back on it. Made it incredibly frustrating to drive. All of that nonsense is gone now. I took it for a drive and was intentionally trying to get it to stumble and was never able to replicate the problem with the restrictor in place. Now I can just roll into the throttle and the car just goes like mad. I was seriously considering selling the car or take the whipple off because it was so frustrating to drive. Really glad I tried these before I dumped $1000 into the smoothboost. |
06-22-2023, 06:25 AM | #37 |
Drives: 2015 Z/28 #397 2022 ZL1 #1799 Join Date: Jul 2009
Location: DC
Posts: 521
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Wow, what a fix, very nice work!
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06-22-2023, 07:57 AM | #38 | |
Drives: 2019 Camaro 1LE Shock Candy Join Date: Mar 2016
Location: Garage
Posts: 1,757
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Quote:
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LT4 1.7 Supercharger snout ported & Meth
103 Katech TB, KATECH Custom Heads, DSX In-line fuel TSP Headers, Spec P Super Twin Clutch, TSP EL C7 CAM Diamond Piston & Manley Rods, Roto Fab Big Gulp BTR Push Rods,LS7 Lifters, ARP, FI Chiller, Kirkey Seats SJM Line Lock, Hurst Pistol Grip. 747/739 RWHP street tune - 821/794 RWHP track tune 101 octane. 2014 Mini Cooper countryman S All4 M6 daily driver |
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