Took my whipple ZL1 to the dyno today and don't know what to think...

GT-ER · 06-01-2019, 05:18 PM

Took the car today to the dyno to see how much power she's putting down and I'm surprised at how low the numbers were considering the mods and that the tune really looks to be good.

I put down 645whp and 710wtrq.

I'm surprised torque was much higher than HP. It was on a Dyno Dynamics and the run was done in 6th gear (couldn't be done in 7th because the DD was limited to 150mph). Ambient temp was 95*F outside and probably closer to 100 inside.

Mods are:

Whipple with 3.5 upper and 9.10 lower
2" Headers, 3" Hi flow Cats, AWE Touring Exhaust
RotoFab CAI
1 Step colder plugs
Weapon X upgraded heat exchangers
JMS Fuel Pump Booster
93oct with meth
Stock Long Block

A/F was around 11.5-11.8 and timing was around 21* with 0 KR.

Maybe I'm just used to seeing dynojet numbers that are much higher or maybe doing the pull in 7th would have given me better numbers...I don't know. Maybe the lack of a cam or stock TB is what's really killing power up on top.

Anyone have any thoughts on this?

RDBill · 06-01-2019, 05:40 PM

How does it feel driving it? Looks like the A/F is in the ballpark... I would think you may need a low side fuel system especially with a stock cam but i'm no expert.

I'm not familiar with that dyno... my car has only been dynoed on a Dynojet. I would think in Texas you have a few tuners in your area if you wanted to dyno it again on a better day and a different dyno.

GT-ER · 06-01-2019, 07:19 PM

Quote:

Originally Posted by RDBill

How does it feel driving it? Looks like the A/F is in the ballpark... I would think you may need a low side fuel system especially with a stock cam but i'm no expert.

I'm not familiar with that dyno... my car has only been dynoed on a Dynojet. I would think in Texas you have a few tuners in your area if you wanted to dyno it again on a better day and a different dyno.

Sorry, forgot to add that I have a JMS voltage booster for the LPFP. Fuel pressure is rock solid.

Yeah, I'll end up just going somewhere else to give it a try I suppose. Ultimately I suppose it doesn't really matter, car pulls hard as hell. Even my Toyo R888R's have a hard time putting the power down under 40mph.

DangerZL1 · 06-01-2019, 07:59 PM

Was the car tuned on a dyno after the build?

*Joshinator99* · 06-01-2019, 08:01 PM

100 degrees in the dyno room sure as hell didn’t help.

Definitely leaving power on the table with the stock TB. The 95mm TB is so inexpensive, that’s a no-brainer for you to add on.

01cbr929 · 06-01-2019, 08:46 PM

DD reads significantly lower than DJ.

Sakudog · 06-01-2019, 09:13 PM

You should get a 5" intake, ZR1 TB and have it retuned. PD blower cars making north of 650 rwhp really react well to less restriction before the TB. Just my .02

I would be disappointed that your tuner, didn't know this or recommend it. (whoever they are)

GT-ER · 06-01-2019, 10:06 PM

Car was tuned on the street, not dyno.

I've seen people put down over 750whp on stock TB, while I don't doubt it doesn't help my case to still run the factory one, I doubt just upgrading the TB will give me an extra 100hp. Granted, I guess Dynojet vs. Dyno Dynamics may be why. I have thought about it though, but traction is already an issue so I don't know what to do...

XXX ZL1 · 06-01-2019, 10:17 PM

How much boost are you seeing with that combo?

GT-ER · 06-01-2019, 10:35 PM

Quote:

Originally Posted by XXX ZL1

How much boost are you seeing with that combo?

16-17psi.

HoldMyBeer · 06-01-2019, 10:54 PM

So, when I had my 03 Cobra tuned over 10 years ago on a dyno dynamics dyno, I was told the difference between DD dynos and dynojets was approx 12%. So applying that factor it puts you about 725 rwhp.

Hope it helps.

gotswap · 06-02-2019, 12:24 AM

Dyno Dynamics is the heartbreaker dyno, without a base line you really have nothing to compare.

F419sr1 · 06-02-2019, 03:33 PM

Mine did 665 on 93 no meth. Stock cam kooks with green cats roto fab and a 103 Tb. 13 pounds of boost. On e40 it made 698 and was running out of fuel. I also have the booster. My tq is no where near yours. 639

SJFGTO · 06-02-2019, 04:51 PM

Seems low on the HP side, but there are so many variables involved. Dyno numbers are really just a by-product of how an engines performs. If it runs strong on the street then no worries. Another dyno on a cooler day may give a whole different result. I would not give these numbers any worry.

06-01-2019, 05:18 PM	#1
GT-ER Drives: 2018 Camaro ZL1 Join Date: Feb 2018 Location: FW TX Posts: 384	Took my whipple ZL1 to the dyno today and don't know what to think... Took the car today to the dyno to see how much power she's putting down and I'm surprised at how low the numbers were considering the mods and that the tune really looks to be good. I put down 645whp and 710wtrq. I'm surprised torque was much higher than HP. It was on a Dyno Dynamics and the run was done in 6th gear (couldn't be done in 7th because the DD was limited to 150mph). Ambient temp was 95F outside and probably closer to 100 inside. Mods are: Whipple with 3.5 upper and 9.10 lower 2" Headers, 3" Hi flow Cats, AWE Touring Exhaust RotoFab CAI 1 Step colder plugs Weapon X upgraded heat exchangers JMS Fuel Pump Booster 93oct with meth Stock Long Block A/F was around 11.5-11.8 and timing was around 21 with 0 KR. Maybe I'm just used to seeing dynojet numbers that are much higher or maybe doing the pull in 7th would have given me better numbers...I don't know. Maybe the lack of a cam or stock TB is what's really killing power up on top. Anyone have any thoughts on this? Last edited by GT-ER; 06-01-2019 at 07:18 PM.

06-01-2019, 08:01 PM	#5
Joshinator99 Moderator Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018 Location: New Ipswich NH Posts: 6,350	100 degrees in the dyno room sure as hell didn’t help. Definitely leaving power on the table with the stock TB. The 95mm TB is so inexpensive, that’s a no-brainer for you to add on. __________________ 2017 Chevy Camaro 2SS A8 Whipple 3.0, Mast Black Label heads, ATI 8L90, Fore triple in-tank pumps, 112mm TB, LPE +52% injectors & BB HPFP, TooHighPSI/Katech port injection, 15” conversion 1066 WHP STD/1027 SAE, 9.10@152.5 (new times coming)

06-01-2019, 09:13 PM	#7
Sakudog Drives: 2019 ZL1 1LE A10 Join Date: Jan 2015 Location: The ATX Posts: 966	You should get a 5" intake, ZR1 TB and have it retuned. PD blower cars making north of 650 rwhp really react well to less restriction before the TB. Just my .02 I would be disappointed that your tuner, didn't know this or recommend it. (whoever they are) __________________ Ryker #29 2019 ZL1 1LE A10 2015 Z/28 #809 Last edited by Sakudog; 06-01-2019 at 10:42 PM.

06-01-2019, 10:17 PM	#9
XXX ZL1 Drives: 2024 ZL1 M6 Join Date: Sep 2018 Location: Pace FL Posts: 449	How much boost are you seeing with that combo? __________________ 2024 Riverside Blue ZL1 M6 Magnuson 2650R, NW 103, Roto Fab Big Gulp Kooks 2 inch LT's, Stainless Works Legend NPP THP Billet Valve Covers, Mighty Mouse Wild CC Signature Forged 20x10.5/20x11.5, BMR springs, BMR Cradle lockout, AAD Billet arms 2023 Vivid Orange ZL1 M6 - sold 2019 Riverside Blue ZL1 A10 - sold

06-01-2019, 10:54 PM	#11
HoldMyBeer Drives: 2017 ZL1(Silver) - A10, Stock Join Date: Jan 2019 Location: SoCal Posts: 65	So, when I had my 03 Cobra tuned over 10 years ago on a dyno dynamics dyno, I was told the difference between DD dynos and dynojets was approx 12%. So applying that factor it puts you about 725 rwhp. Hope it helps. __________________ 2017 ZL1(Silver) A10

06-01-2019, 05:40 PM	#2
RDBill 902HP 858TQ Drives: 2018 ZL1 A10 Join Date: May 2018 Location: New Jersey Posts: 135	How does it feel driving it? Looks like the A/F is in the ballpark... I would think you may need a low side fuel system especially with a stock cam but i'm no expert. I'm not familiar with that dyno... my car has only been dynoed on a Dynojet. I would think in Texas you have a few tuners in your area if you wanted to dyno it again on a better day and a different dyno.

06-01-2019, 07:59 PM	#4
DangerZL1 Drives: 2023 Black ZL1 Auto Join Date: Oct 2009 Location: FEMA Region 4 Posts: 2,936	Was the car tuned on a dyno after the build?

06-01-2019, 08:46 PM	#6
01cbr929 Drives: Which one? Join Date: Jul 2018 Location: Nashville, TN Posts: 44	DD reads significantly lower than DJ.

06-01-2019, 10:06 PM	#8
GT-ER Drives: 2018 Camaro ZL1 Join Date: Feb 2018 Location: FW TX Posts: 384	Car was tuned on the street, not dyno. I've seen people put down over 750whp on stock TB, while I don't doubt it doesn't help my case to still run the factory one, I doubt just upgrading the TB will give me an extra 100hp. Granted, I guess Dynojet vs. Dyno Dynamics may be why. I have thought about it though, but traction is already an issue so I don't know what to do...

06-02-2019, 12:24 AM	#12
gotswap Drives: 2019 ZL1 Crush Join Date: Jan 2019 Location: Colorado Springs Posts: 564	Dyno Dynamics is the heartbreaker dyno, without a base line you really have nothing to compare.

06-02-2019, 03:33 PM	#13
F419sr1 Drives: 2017 ZL1 Join Date: Jun 2018 Location: Randolph Posts: 317	Mine did 665 on 93 no meth. Stock cam kooks with green cats roto fab and a 103 Tb. 13 pounds of boost. On e40 it made 698 and was running out of fuel. I also have the booster. My tq is no where near yours. 639 __________________ Kooks full exhaust, Roto Fab, Whipple,Williams 103, Fore innovation, JRE cam and tuning

06-02-2019, 04:51 PM	#14
SJFGTO Oh Oh it's Friday Night! Drives: 2018 ZL1 1LE Nightfall Gray Join Date: Jan 2018 Location: Walton Woods Posts: 1,075	Seems low on the HP side, but there are so many variables involved. Dyno numbers are really just a by-product of how an engines performs. If it runs strong on the street then no worries. Another dyno on a cooler day may give a whole different result. I would not give these numbers any worry. __________________ 2018 Camaro ZL1 1LE NFG; ARH 2” headers, catless mids, ARH full exhaust, Lingenfelter 18% lower pulley, ATI Harmonic Balancer, Roto-fab CAI, EE-catch can, TM ported TB, NX Lid, BMR strut tower brace. Aeroforce dual pod interceptor gauges. Tuned by Vengeance Racing!!! 644 HP @ 6250 rpm / 689 trq @ 3660 rpm Four that wanna own me Two that wanna stone me One says she's a friend of mine...

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