02-10-2018, 03:37 PM | #225 |
Drives: 2014 ZLI Camaro Join Date: Jan 2017
Location: Myrtle Beach, SC.
Posts: 63
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I cannot figure out how to get the actual dyno sheet to attach it.
If I may, I can tell you it was a dynojet. Car made 633 /612. Mods are:ported and polished heads and blower by ligenfelter New intake valves with new springs and retainers New hydraulic roller cam 2.55 blower pulley, 8.66 lower Borla atak exhaust American racing stainless steel long tubes C.A.I. 62 lb injectors with booster pump Tune I will continue to try uploading the actual sheet. Car is a 2014 ZL1 Blower made 19.lbs boost.
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2014 ZL1 with CA I, Ligenfelter ported and polished heads and supercharger, custom hydraulic roller cam, and valves, and springs, 2.55 blower pulley, custom crank pulley, upgraded fuel injectors with booster pump, American Racing long tubes headers with full Borla Atak exhaust system, Autometer digital boost and wide band gauges,custom tune, and some powder coating and airbrushing under the hood for some "splash".
Last dyno, 610whp without nitrous. Nitrous Outlet blower plate system tune: 755 whp on a loaded dyno. |
02-10-2018, 10:08 PM | #226 | |
fo'shizZL1
Drives: 2017 ZL1 Join Date: Aug 2017
Location: ATL
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Quote:
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2017 ZL1 M6 Black | Maggie 2650 // 103TB // Big Gulp // CSP LT's & Ultra Cats // Elite Ultra CC // BMR MM
Past Rides- 2014 ZL1 M6 Red Hot | Tons of mods 2004 CTS-V M6 Silver | Many mods 1995 Corvette M6 Torch Red | A few more mods 1992 Camaro M5 White | A few mods |
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02-10-2018, 10:24 PM | #227 | |
Drives: Fast Join Date: Mar 2015
Location: Michigan
Posts: 3,696
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Quote:
Did you get a baseline? Who tuned it? Did you check for belt slip? Cracked plugs? Is it pulling timing/spark knock or similar tuning things? It seems you're pretty light/have no cooling mods...A heat exchanger and expansion tank would do you a lot of good. |
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02-10-2018, 11:11 PM | #228 | |
fo'shizZL1
Drives: 2017 ZL1 Join Date: Aug 2017
Location: ATL
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With the listed mods and an auto, I'm with you. I'd think maybe 660-675 on 93 on a DJ. I'm also surprised it's only running 62lb injectors- I'm guessing those are at the limit. I'm not trying to give you any grief on your build, ghost. It just that I would want somebody to raise the flag for me if it were my car. Did your tuner happen to log IAT2 during the run? If your intercooler pump was not running, or you had air in the lines, or a pinched line, then you could be pulling a lot of timing which would lead to the lower than expected numbers.
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2017 ZL1 M6 Black | Maggie 2650 // 103TB // Big Gulp // CSP LT's & Ultra Cats // Elite Ultra CC // BMR MM
Past Rides- 2014 ZL1 M6 Red Hot | Tons of mods 2004 CTS-V M6 Silver | Many mods 1995 Corvette M6 Torch Red | A few more mods 1992 Camaro M5 White | A few mods |
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02-11-2018, 08:29 PM | #229 |
Drives: 2012 ZL1 Camaro Join Date: Jan 2014
Location: Louisiana
Posts: 35
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How’s that for a stock cam LSA?
Mods are 9.1” lower, 2.55 upper, New Era ported blower, custom 4.5” CAI, 2” Stainless Works headers, ID 1300’s, Squash twin 450’s, Yank ZL1 2800 converter, E83 and Asylum Motorsports tuning. The car has been 10.05 @ 134 with 70ish less hp. Should see some solid 9’s now! |
02-11-2018, 09:21 PM | #230 |
fo'shizZL1
Drives: 2017 ZL1 Join Date: Aug 2017
Location: ATL
Posts: 1,296
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Nice!!!
That's some serious thump at the rollers through an auto! Not bad for an "Old Red Neck." .
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2017 ZL1 M6 Black | Maggie 2650 // 103TB // Big Gulp // CSP LT's & Ultra Cats // Elite Ultra CC // BMR MM
Past Rides- 2014 ZL1 M6 Red Hot | Tons of mods 2004 CTS-V M6 Silver | Many mods 1995 Corvette M6 Torch Red | A few more mods 1992 Camaro M5 White | A few mods |
02-12-2018, 06:20 PM | #231 | |
Drives: 2014 ZLI Camaro Join Date: Jan 2017
Location: Myrtle Beach, SC.
Posts: 63
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Quote:
At this point, can the difference actually be because it's street tuned and not dyno tuned?
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2014 ZL1 with CA I, Ligenfelter ported and polished heads and supercharger, custom hydraulic roller cam, and valves, and springs, 2.55 blower pulley, custom crank pulley, upgraded fuel injectors with booster pump, American Racing long tubes headers with full Borla Atak exhaust system, Autometer digital boost and wide band gauges,custom tune, and some powder coating and airbrushing under the hood for some "splash".
Last dyno, 610whp without nitrous. Nitrous Outlet blower plate system tune: 755 whp on a loaded dyno. |
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02-12-2018, 06:27 PM | #232 | |
Drives: 2014 ZLI Camaro Join Date: Jan 2017
Location: Myrtle Beach, SC.
Posts: 63
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Quote:
Thanks for this info. Keep it coming.
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2014 ZL1 with CA I, Ligenfelter ported and polished heads and supercharger, custom hydraulic roller cam, and valves, and springs, 2.55 blower pulley, custom crank pulley, upgraded fuel injectors with booster pump, American Racing long tubes headers with full Borla Atak exhaust system, Autometer digital boost and wide band gauges,custom tune, and some powder coating and airbrushing under the hood for some "splash".
Last dyno, 610whp without nitrous. Nitrous Outlet blower plate system tune: 755 whp on a loaded dyno. |
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02-12-2018, 07:47 PM | #233 |
Drives: Fast Join Date: Mar 2015
Location: Michigan
Posts: 3,696
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If the street tune was done correctly by a professional, then that shouldn't be the problem for a loss of 60+ HP. But it could be that he was never able to do perfect tuning and run the car in 4th all the way to 6500 RPM which would be around 140 MPH.
Yeah I'd definitely start trouble shooting. As noted, a Heads/Cam/Ported Blower/FBO build should be easily in the 675+ RWHP range, and could be over 700. Even with the lower octane of the 93. I'd get it to a dyno shop with a competent LS skilled team and let them start trouble shooting. On the Corvette Forum there was a guy with a ZR1 and same story as this car. All the work under the sun done but it just never made numbers, stuck at 590-620 RWHP. He had it checked out by many shops and tuners, nothing was ever found wrong, but it just never made the power it should (750+ RWHP). End of the day, I wonder if cars like this have an internal error that will never be right short of getting a new long block. Did you get a baseline? Dynos can read extremely stingy for HP, but if it shows a ~150-200 RWHP gain like it should have for those mods, then it could be fine. |
02-13-2018, 07:13 AM | #234 |
GPI Sales Consultant
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^^^^ This! A dyno is really hard to quantify absolutes with. If you have a baseline you can learn a lot more from the delta than the peak number. However, it's easily solved, go make a couple passes at your local dragstrip. Don't be too worried about cutting a light or making a ridiculous 60', just get the car out of the hole decent and planted, and make sure you hit your shifts nice and crisp. Trap speed with a DA measurement will tell you all you need to know about the power you're making.
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GPI Max Package 2.0: Brodix BR7 heads/GPI porting, MAX3 cam, ST2116LSR, BSR Max Lift rockers, LS7 LSXR with 103mm TB, Vararam OTR, Mcleod RXT, G-Force/Strange 9" IRS setup with 4.63 gear. 551whp, 11.1@124mph.
Got a question about a GPI product? Feel free to shoot me a message! |
02-13-2018, 10:16 AM | #235 |
Drives: 2014 ZLI Camaro Join Date: Jan 2017
Location: Myrtle Beach, SC.
Posts: 63
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Thank you very much. The base line I used was what I read on this forum for a stock zl1 6 speed,2014.
I used 500 for my base line. My mechanic friend told me, EXACTLY WHAT YOU SAID..."before you do anything else to this car, lets take it to the track with a set of tires and watch what this thing will do. My mechanic pete studwell has been racing NHRA for many years, and has built many cars, His mustang was on the cover of FAST FORDS AND MUSTANGS. he is meticulous and trust his work. He street tuned it as no dyno was available. He to said I can get more power if we tune it on a dyno where 4th gear max acceleration can be applied. I will get some good track tires, and let you know how I do and how my mechanic does. He knows speed...his mustang is a high 7's 188mph quarter mile car.
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2014 ZL1 with CA I, Ligenfelter ported and polished heads and supercharger, custom hydraulic roller cam, and valves, and springs, 2.55 blower pulley, custom crank pulley, upgraded fuel injectors with booster pump, American Racing long tubes headers with full Borla Atak exhaust system, Autometer digital boost and wide band gauges,custom tune, and some powder coating and airbrushing under the hood for some "splash".
Last dyno, 610whp without nitrous. Nitrous Outlet blower plate system tune: 755 whp on a loaded dyno. |
02-13-2018, 11:51 AM | #236 |
fo'shizZL1
Drives: 2017 ZL1 Join Date: Aug 2017
Location: ATL
Posts: 1,296
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Since he's your friend, maybe you can easily find out things like:
- How much timing did he give it at WOT, both at max tq and at redline? - What was the injector duty cycle? - What AFR (or lambda equivalent) was he commanding at WOT and what was actually measured? - What were IAT2 peaks during WOT runs? If you can get some of this data, we can at least let you know if you're in the ballpark. I agree that dynos vary, and the trap speed will tell you the real deal. BUT- unless this particular dynojet is just waaaay (like waaaaay) far off with it's calibration, then I still believe something else is going on. Since you noted that it dropped 14 hp on the second run, my money is still on IAT2's- in other words, I think your intercooler/heat exchanger loop isn't doing its job properly. If you can get the IAT2's that were logged during the WOT runs, then we'd know if that was the issue or not.
__________________
2017 ZL1 M6 Black | Maggie 2650 // 103TB // Big Gulp // CSP LT's & Ultra Cats // Elite Ultra CC // BMR MM
Past Rides- 2014 ZL1 M6 Red Hot | Tons of mods 2004 CTS-V M6 Silver | Many mods 1995 Corvette M6 Torch Red | A few more mods 1992 Camaro M5 White | A few mods |
02-13-2018, 01:01 PM | #237 | |
Drives: Fast Join Date: Mar 2015
Location: Michigan
Posts: 3,696
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Quote:
Since he's your buddy, take a weekend and go over the whole car. Take the blower off, check everything you can. Get the car to a dyno and get it dyno tuned and LOG EVERYTHING if you can. |
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02-13-2018, 07:14 PM | #238 |
Drives: 2014 ZLI Camaro Join Date: Jan 2017
Location: Myrtle Beach, SC.
Posts: 63
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Looks like I have some work to do. One last question...with a street tune and a handheld, is all that data logged?
In my 2004 gto I had hp tuners and everything was logged and I could see every point of interest. But, not having a program like that, can you really get that much data, or do I go to tuning specialist like RPM Motorsports in North Carolina which is the closest, and have them install hp tuners and get the dyno tuning done? Thank you all again for your help.
__________________
2014 ZL1 with CA I, Ligenfelter ported and polished heads and supercharger, custom hydraulic roller cam, and valves, and springs, 2.55 blower pulley, custom crank pulley, upgraded fuel injectors with booster pump, American Racing long tubes headers with full Borla Atak exhaust system, Autometer digital boost and wide band gauges,custom tune, and some powder coating and airbrushing under the hood for some "splash".
Last dyno, 610whp without nitrous. Nitrous Outlet blower plate system tune: 755 whp on a loaded dyno. |
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