05-23-2015, 12:30 PM | #1 |
UPDATE: NOT Disappointed
I have a manual 2014 ZL1 and had some mods installed yesterday. When I took the car in the pre-install dyno showed 509 RWHP / 497 RWTQ at 10.3 Psi AFR 11.3 The pre install run had a Roto fab CAI, VMAX 87mm TB and a catch can.
So, I had installed the ATI 10% pulley, ARH shorty headers (ceramic coated), Roto fab big gulp and tuning with HP tuners. End result was 550 RWHP / 540 RWTQ at 12.7 Psi AFR 11.9. The temp during the runs was 68 F and 64% humidity at an elevation 765 feet MSL in Murrieta, CA on 91 octane, 98% injector duty cycle. My question to the members of the forum is, do these number seem low for the mods completed? Last edited by elsololobo02; 08-24-2015 at 02:04 PM. |
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05-23-2015, 12:38 PM | #2 |
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Just curious, why no LTs since you where going with tune anyways. Is it a inspection thing? What about hi flow cats? Or you still running factory cats?
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2017 ZL1 A10: 8.84 @ 156 PB
2017 ZL1 A10: Previously FBO 756/761 (9.6 @ 143 1/4) SOLD-2013 ZL1 M6:BTR,LTs,IDs,ATI,RotoFab10.84@129 SOLD-2011 SS M6: Blower, Cam, Alky, LTs. |
05-23-2015, 12:47 PM | #3 |
Yes it was an inspection thing. ARH shorty are CARB approved. Factory cats on the car.
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05-23-2015, 12:51 PM | #4 | |
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Quote:
See I don't think there will be much gains from the short tubes, but the 10% and the tune will be your gains. So 41 rwhp I don't think is all that bad, and that 91 octane will also be a limiting factor when you start to up your boost. But the big question is how does it feel, if it pulls hard and puts a smile on your face, enjoy. Don't worry about dyno numbers.
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2017 ZL1 A10: 8.84 @ 156 PB
2017 ZL1 A10: Previously FBO 756/761 (9.6 @ 143 1/4) SOLD-2013 ZL1 M6:BTR,LTs,IDs,ATI,RotoFab10.84@129 SOLD-2011 SS M6: Blower, Cam, Alky, LTs. |
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05-23-2015, 01:13 PM | #5 |
Drives: 13 Camaro ZL1 Join Date: Apr 2014
Location: Maryland
Posts: 145
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Also with your stock injectors being maxed out that's probably as far as they could take it. Seems about right. A 10%lower isn't much of a boost increase. I would add a 2.55 upper and port snout at same time, Id850, and some 200 cell high flow cats. You would see a nice increase. But 550 with those mods on 91 is about right.
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05-23-2015, 06:10 PM | #6 | ||
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Last edited by elsololobo02; 05-23-2015 at 06:32 PM. |
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05-23-2015, 07:25 PM | #7 |
Most get that 75 with long tube headers and high flow cats. I think that's a good gain considering stock cats and 91 and shorty headers.
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--- DarthZL1 - 2014 ZL1 #2095 M6 Black. Bone Stock ---
--- BigNLo - 1996 Impala SS Hot Rod Black. Lots of mods --- |
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05-23-2015, 07:34 PM | #8 |
Drives: 2014 1LS M6 Supercharged Join Date: Feb 2011
Location: New Britain, Ct
Posts: 937
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Most Zl1's avg around 480, 490 rwhp. You've increased your output 60 - 70 Hp , that's dam good.
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05-23-2015, 07:56 PM | #9 | |
Quote:
My increased output is 41 RWHP, not 60-70. Maybe your quoted numbers reflect an automatic? I am a manual. By your metrics I am 19-29 RWHP short. Last edited by elsololobo02; 05-23-2015 at 08:25 PM. |
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05-23-2015, 08:25 PM | #10 |
Drives: camaro zl1 Join Date: May 2014
Location: Florida
Posts: 55
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The first set of mods added probably 25hp and the second set probably another 40. Seems pretty decent to me considering the cost
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05-23-2015, 08:44 PM | #11 |
Sarcasm loading --------
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Looks like its time for some fuel system upgrades...
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"The salesman actually told me to stop getting it sideways during the test drive"
2018 MBM ZL1 1LE - Stock 2014 CRT ZL1 574 rwhp, 537 rwtq - SOLD 2010 IBM SS Camaro VVT L99 w/ TR6060 swap, 489 rwhp, 444 rwtq - SOLD |
05-23-2015, 09:30 PM | #12 |
Drives: '21 ZLE A10 Join Date: May 2012
Location: Mechanicsville, VA
Posts: 6,808
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my car was an A6 with a 10% lower and headers. With a conservative tune for the road course, it was only 508rwhp/540rwtq. It sill ran 11.37@119 like that so don't sneeze at "only 550rwhp". The dyno doesn't mean a lot, but the good thing is that you can get a larger lower pulley like a 9.17" or 9.55" and really enjoy the power. It would be in the 580rwhp range with a larger diameter lower pulley with 91 octane. I bet it feels great on the street so don't dwell on the #s so much!
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'21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60'
'17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold) |
05-23-2015, 10:22 PM | #13 |
Drives: 2013 ZL1 M6 Join Date: Oct 2014
Location: Ontario
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i agree don't let the numbers bug you, my car has long tubes with high flows, intake, 2.55 sc pulley, id 850's, dyno tune. after reading lots i was really thinking it would make 600 but only made 574.
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05-23-2015, 10:24 PM | #14 |
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Drives: 2015 Redhot 1LE Join Date: Feb 2013
Location: Westchester NY
Posts: 1,409
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you need 93 octane
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