Dyno results...check em' out

[Ademy08]

Looking at everyone else's dyno results the Torque is usually higher than the horsepower however on my SRT the TQ is less than the HP... what could be the problem? I peaked at 369HP and 335 TQ @ 20 psi (mods are listed in profile).


this is the A/F and boost

Uncategorized - srt4 dyno af and boostbmp_Thumbnail1


this is the HP and TQ


Uncategorized - srt4 dyno hpbmp_Thumbnail1


does somethin seem funny here?? just asking because I'm clueless...

thanks

[mahkis]

it is not uncommon for cars with bigger turbos to produce more hp than tq. small turbos(stock and s3) spool very quickly, resulting in a large torque spike.

[seltech]

Generally from my experience the high TQ most srt's make on the dyno are experiencing some sore of timing retard. Again i'm not 100% sure but from what I gather the less timing advance the more torque the engine produces and less horsepower is produced. So in your case your cars prolly running nicely with little to no knock retard

you'll notice the shop cars on this site usually have even hp and tq numbers or the hp is higher, this is the result of a superior tune.

[srt4geezer]

I would say something is off. It should be even at the lowest.

[Ademy08]

the higher torque with the timing retard seems to make sense, because one of my pulls on the dyno my boost spiked and you can see on the HP curve that it leveled out when it retarded the tyming. The TQ on that same pull was 344 ft/lbs, a 9ft/lb increase from the 335 with the Higher HP outcome.

I still think that there could be a problem, what are the most likely problems that you can suggest? One thing that i could think of is that for the first 4 or 5 days I had the car the boost controller line was disconnected, resulting in a closed wastegate, I was probably pushing about 40psi at that time because when i actually looked over at the boost gauge under full throttle ( only did it once because I first got it and was too occupied trying to keep the car on the road) it was wrapping right around 30psi and wanted to keep going. I then put it right down to 20. That's about the only thing I can think of that would affect anything.

thanks