Rvca3112

So yesterday I felt it necessary to put my car on the dyno to see how healthy she was. Oil analysis came back great after last oil change. Over all the motor seems great. So on the dyno it goes. I went to a local Subaru, evo, gtr tuner because they have a all wheel drive mustang dyno. Great shop named Procom Racing. I've been friends with the shop owner and techs for a while because they helped me with tuning my big turbo Audi A4 in the past. As I walked in everyone gawked at the car saying how cool it was. Then one tech came to me and asked if I had done any clutch mods. I said yes it has a gt2 clutch modification. He shocked me by knowing what it was and what was removed, while also explaining that he was very familiar with porsches and has done many builds including the 996 turbo called yellow bus. So anyway....

we strap it on to the mustang dyno, also known as the heart breaker. I put down 423 awhp and 436 awt. Does this seem right? Even for a mustang dyno, I was hoping for more it's my modifications.

Mods are ported exhaust manifolds, no cats, fabspeed gen 3 mufflers, k16/k24 hybrid zero clearance turbos, gt2 intercoolers, all piping, evoms intake, motormounts, forge diverter valves, and a custom Cobb tune from Sam @bydesign.

The owner said he gets those kind of numbers from a stock turbo 996 with a protune.

Any thoughts?


and for viewing pleasure...

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Rvca3112

Sorry I meant to ask another question but got carried away with the details. What else can I do to this thing to get more power out of it aside from bigger turbos. Sam said my intercoolers are what's choking me up right now, but other than that...Intake plenum? Throttle body? I've got the go faster itch and I need to scratch it... or maybe put some cream on it, I should probably goto a doctor and get it checked out.

awes3939

Well a mustang dyno will always read pretty damn low....so say ~10% lower than a dynojet. So your car is upwards of 460whp and 500wtq - not bad numbers IMO (think also more power lost to the ground via AWD). But people tend to get caught up with peak numbers too much. Area under the curve matters more (to me at least). You'll create more peak HP with bigger turbos but you'll be waiting for them to spool. Dyno graph pics?

From what I've read, 997.2GT2 IC's should be good for a car making 6-700hp, so I don't think that's the first issue...I'm sure others will chime in who have more knowledge.

But at the end of the day - does the car put a smile on your face? Can't quantify that on a dyno

awes3939

Now this really makes me want to get my car on a mustang dyno and see what it makes!

Rvca3112

I believe my intercoolers are 996 gt2 intercoolers

awes3939

That could be something you'd want to look into - Carnewal has GT2RS IC's for a reasonable price. That + IPD plenum should give a well-rounded car. Less heat soak, quicker spool and maybe some top end as well.

996tt6156R

Depends on what boost you were dynoing at? What fuel? Mustang dynos don't read that low it's the way they set them up when you get your car on there.

z06801

Yes what boost is your car tuned for with those mods?

Rvca3112

I believe 1.3-1.4 bar. Occasionally 1.5 I think. The car pulls hard for me to even look down at the dash boost gauge.

RngTrtl

can you please post the graphs? They are much more helpful than the max #s.

T10Chris

996 gt2 intercoolers will choke it for sure...

also dyno is pretty worthless other than comparing your car vs your car before, if you want a guesstimate of power go run 60-130 or 1/4 mile and see what trap speed is

SamboTT@ByDesign

Hey bud! Is the car running a little stronger after the heat wave? Remember to send me logs of the latest map and we can keep chipping away at it. It does different quite a bit like some mentioned dyno to dyno. For example on a conservative mustang a stock car puts down between 320 and 340 to the wheels. Adding approximately 100 to that on pump gas with your set up is pretty good. To get over 400 to the wheels on a mustang you're probably looking at a K24 car and the 16/24 is just below that. What I have always loved about those turbochargers is that they generally have no lag at all. With a couple of the other mods the other gentleman mentioned we can get the car to run even stronger and just basically feel like a V-8. Until you get into injectors and larger turbochargers we will be limited but I think you will love the way it drives. Also a higher flowing intercooler will you old almost 20 to the wheels by itself because the flow and IAT control.

powdrhound

UMW zero clearance turbos with Cobb tuning? 1.4 bar on pump gas and stock injectors seems awfully high, doesn't sound right. I think you'd be on the ragged edge of out of fuel on the stock fuel system. Be very carefully and log the car so Sam can look it over to make sure it's safe. Running a little conservative is oftentimes the smart thing to do. I have a track friend of mine that had his car over aggressively tuned by Cobb and he blew up his turbocharger by over spinning it. It can happen. I have it on video and it's pretty spectacular as the turbine shaft separated and hurried itself several inches into the Cat on his Europipe exhaust.

As others have said, dyno numbers are meaningless unless your doing a comparison on the same dyno. Post your dyno curve. I have Kevin's zero clearance K16 and you can overlay the graph.. BTW, should have your door sills ready to ship by the weekend my friend.

SamboTT@ByDesign

Agreed with John. I'm pretty sure the 1.5 is a spike when you let off the throttle. Your car should be shooting for about 1.2 maybe 1.3 up top. Bringing in the power and boost her very gently so you're good but I would love to see a log after the heat wave

Macster

Link doesn't work for me.

During the dyno run were air fans directed at the radiator intakes? And at the intercooler intakes?