[Cars are the new horse]

I did a baseline reading a week ago, then installed the Dinan Stage 2 and the Dinan Cold Air Intake. I originally got 245 HP / 252 Torque. The guy told me that a Dynojet will read 15% higher than his Mustang Dyno. I was generally ok with the baseline (for what it's worth, because of the heat today the machine readjusted the baseline to 241 HP / 245 Torque).

Today I did another set of pulls and I'm only showing 282 HP / 313 Torque. I was expecting in the 315 range, so I'm pretty disappointed. I'm now scheduled to get Stage 3 installed in a week, so we'll see if that helps.

The dyno guy said the 3rd run produced 26 less HP than the second run, so the cooling components in Stage 3 will likely help performance significantly. They told me the highest a 335i had pulled on their dyno was 320 HP, so this was within their expectations even though mine were far higher.

I'll attach the dyno graph comparison here (I don't know how to paste it inline to a post so I'm using the attachment feature).

EDIT: I say it in a post below, but I'll put it here too. The temps were 92 degrees with 50% humidity for the Dinan run. I don't know the humidity for the stock run, but temps were low 70s.

[a32guy]

Hmm what were weather conditions? I dyno'd at like 270 completely stock on a mustang, but it was cold at the time.

Either way its all relative. Good gains there!

[Cars are the new horse]

Originally Posted by a32guy

Hmm what were weather conditions? I dyno'd at like 270 completely stock on a mustang, but it was cold at the time.

Either way its all relative. Good gains there!

Thanks, I was expecting more than +41 rwhp / 68 torque, but it *was* hot. 92 degrees, 50% humidity. The temperature at the first dyno was 72 degrees if I recall.

[RoundelM3]

Sounds really low...where did you take it for the dyno runs? Bavarian Hypersports in NW Houston had a pretty decent dyno a few years back, but I've not been there in awhile. They know their stuff in regards to forced induction and performance mods.

[Cars are the new horse]

Originally Posted by roundel335

Sounds really low...where did you take it for the dyno runs? Bavarian Hypersports in NW Houston had a pretty decent dyno a few years back, but I've not been there in awhile. They know their stuff in regards to forced induction and performance mods.

It was a place called Secret Services Auto near the intersection of 59 and Beltway 8 in SW Houston. Nice people there -- they specialize in designing turbos for older cars. I was sure to call Dinan beforehand to verify that dyno runs don't void their warranty.

[RoundelM3]

I just checked and apparently Bavarian Hypersports has moved to near downtown Houston. They've got a DynoJet, so you might want to look into what kind of numbers you get from theirs if you care to. The numbers you posted looked pretty low, but conditions might have affected them. Kinda hard to avoid the humidity in Houston, though, right?

If the guy at Secret was correct about the 15% diff, you would read 324 hp at the wheels on a DynoJet.

[Cars are the new horse]

Originally Posted by roundel335

I just checked and apparently Bavarian Hypersports has moved to near downtown Houston. They've got a DynoJet, so you might want to look into what kind of numbers you get from theirs if you care to. The numbers you posted looked pretty low, but conditions might have affected them. Kinda hard to avoid the humidity in Houston, though, right?

Ha, definitely. I was more depressed by the gains than I was bottomline numbers, but even looking at bottomline numbers with 20% drivetrain loss, I'm at 353 HP, far lower than the 384 promised by the tune (plus the extra 10-15 promised for the CAI).

But I think the extra cooling will help especially in Houston. Maybe it's foolish of me, but I'm hoping for 315+ after Stage 3 is installed. I want to try the Dynojet you're talking about, but I also think it's important to go back to the same dyno to measure gains more accurately. I just don't want to go back and pull 290 after blowing Stage 3 money and be depressed.

[CubanJJ09]

i think those are fair numbers on a dynojet considering the conditions and humidity .

[Sniz]

has anyone added water or meth injection on a dinan tune to combat their aggressive IAT decay?

[Cars are the new horse]

Originally Posted by CubanJJ09

i think those are fair numbers on a dynojet considering the conditions and humidity .

You think? I don't know -- I was expecting about 25 more HP and torque to the wheels. Maybe I was being unrealistic, but I actually believed the claimed 384 / 429 plus double digit gains for the CAI.

[oner]

Even for a mustang dyno those are low. DINAN.......

[mkaaes]

If my math is correct that means you should/would put down about 330 at a dynojet and about 390 at the crank or fly. That sounds pretty accurate with your high ambient temps.

[enrita]

i had 60 whp over stock with JB3 map 3 completely stock.. seems quite low but you were probably heatsoaking in my opinion.

[RambleJ]

Ouch, the bottom line numbers are what to look at here. Its the delta from the before and after, 3 grand for 40+HP/60+TQ. I'd be pretty damn upset!

[dzenno]

20% drivetrain loss???? more like 14...

[AltecBX]

Originally Posted by Sniz

has anyone added water or meth injection on a dinan tune to combat their aggressive IAT decay?

+1

[Cars are the new horse]

Originally Posted by maxnix

That's the problem with turbo charged engines. especially on a dynamometer - if there is not sufficient fan ducting to simulate airflow at speed and volume commensurate with the road speed, heat soak will kill your IAT.

What is an IAT? Is dynoing my car hurting it somehow because of this IAT?

[AltecBX]

IAT = intake air tempature

[fruition3000]

HTF did u get a Dinan intake? You should at least have a huge fan blowing to avoid heat soak? Those number are waaaayyy low

[klipseracer]

The stock numbers look normal to me for a mustang dyno. But a 40 gain from stage 2 Dinan.... Doesn't surprise me in the least. Go buy a JB+ or SSTT lol... You get what you pay for. Perhaps not.

[M4TW]

Congratulations for getting a tune that doesn't defeat your engine's fail safe cut-offs when your engine excedes temperature limits. Retest when the temperatures fall back to where they were when you tested stock to get a legitimate comparable.

[Cars are the new horse]

Originally Posted by Sparkplug

Congratulations for getting a tune that doesn't defeat your engine's fail safe cut-offs when your engine excedes temperature limits. Retest when the temperatures fall back to where they were when you tested stock to get a legitimate comparable.

Ha, thanks. After I go Stage 3, hopefully we'll be having a different conversation about how awesome the tune is. I'm not looking for a dyno queen, I just want to get the numbers I was promised -- which I guess is unrealistic given that I didn't upgrade my intercooler and was trying to pull crazy numbers in almost 100 degrees and 50% humidity. I'm gonna be optimistic about it.

Are my numbers the lowest we've seen for a Stage 2? I'm thinking so (except the Orb fiasco I read about).