*Official* L99 Dyno Thread

[Coops]

Juiced Motorsports did awesome job again, gpi vvt stage 1, zl1 fuel pump, 65lb injectors, kook headers, green cats, slp2300 super charger with 3.2 pulley 8psi boost and Slp cai

[SSammy]

4/10/2021 Dyno day at 187 Unlimited Performance with the local Holden group here in Utah.
2015 Camaro 2SS/RS A6
Mods: Scoop, CAI, Bo White St 2 PTB, LTs, HFCs, X-pipe, Axle Back, HP Tune by Dynosteve.

Dynojet - SAE corrected

[Chris49066SS]

H/C, bolt ons, stock cubes

[SSkat]

You are spinning the hell out of that thing! Great numbers.

[Chris49066SS]

Originally Posted by SSkat

You are spinning the hell out of that thing! Great numbers.

Thank you sir

[Ryshan]

Hello all, no dyno numbers from me just yet, but will be taking my 2014 Camaro L99 over to GPI to get it dyno-tuned. Beyond excited. Car will be getting their Rod-Mod and ported manifold along with the TB. TSP 1 7/8 LT's into Corsa's ZL1 catbat. *no cats* + RotoFab Intake

I'm hoping to make something near 400rwhp, which is a bit of a stretch but I've been seeing us 14/15 SS' seem to run just a tiny bit harder by a few ponies here and there. Anything in the 385+ range will make me happy. Does anyone have this same setup with a GPI tune that's willing to share their numbers? Looking at going with this "Max Effort FBO" type of build for a while before tossing in a cam. Debating between SS3 VVT and 4,

- Ry
#TeamGPI

[Nz2ssrs]

2011 ss l99 with longtube headers high flow cats, borla 2.5” cat backs and an over the radiator intake.

Hp seems down a little bit torque is up from most.
First test was all bolt ons no tune second was tuned. What do you think ?

[TooleyOnDeck]

Originally Posted by Nz2ssrs

2011 ss l99 with longtube headers high flow cats, borla 2.5” cat backs and an over the radiator intake.

Hp seems down a little bit torque is up from most.
First test was all bolt ons no tune second was tuned. What do you think ?

That does seem a bit low, 258kw is about 345whp. My stock 2015 L99 baselined at 355whp with no tune for reference (dyno sheet attached). I am right at sea level, but it doesn’t seem like it would make that drastic of a difference. I’m sure someone more knowledgeable will chime in.

[Bigdumogre]

Mods in sig

[CamaroCarl2012]

Finally got mine on the dyno. 2012 auto. Texas speed stage 2 cam, cam phaser limiter, new lifters, pushrods, valve springs, fast 102 lsxr intake, nick Williams 103mm throttle body, z/28 cold air intake, msd coils, fast fuel rails with stock injectors, 160 degree thermostat, billet triple disc 3200 stall converter. Bought a lot of the parts here on the forum classifieds.

[CamaroCarl2012]

Oh yeah, BBK 1 and 3/4 long tube headers, kooks full 3" dual exhaust, hi flo cats and mufflers.

[joshuaz28herring]

Originally Posted by Kylejames83

CAI intake, tsp 2.2 vvt cam with the springs and all, che trunion, tsp headers, magnaflow exhaust, circle d 3200 stall and 3.91 gears.

Did those gears help with roll races as much as a dig


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[HammerZL1]

Attached you will see the results of my dyno tune. Looks like its right in there. Corsa CAI and Catback exhaust only. I now have a JLT CAI on it and would like to have it dynoed again, but the dynos are all too expensive.

[1JEWLDSSRS]

Are you running long tubes? Or not. If not, those are good numbers, mine did 332 on a mustang dyno, if you are running long tubes, you are shy a little bit, about 30 or so. When we did mine back in the day with just long tubes, cai, and an exhaust, no cats we put down 370 on the mustang dyno. Dyno jets usually show more than a mustang dyno will..