[beepbeep]

Originally Posted by shiv@vishnu

All turbo engines have turbo lag. That is just a fact of life. If you think you have ZERO turbo lag, you probably don't know what you are looking for. But if you managed to reduce your turbo lag by 50%, you'd know it in a sec.

Shiv

Actually, zero lag is pretty easy to accomplish; you just clock the processor backwards so that the cpu opens the throttle about 1.2 seconds before your foot touches the gas. You may lose a few pedestrians at cross walks over the years but the dedicated tuner is willing to accept the necessary compromises. The pre-trigger time for the throttle opening could be user adjustable, of course, to compensate for altitude, back pressure and the voraciousness of the local attorneys.

[A418t81]

Originally Posted by Driver72

This is what many of the other tuners have been saying all along.
Boost is boost.
You are not going to see one tune that runs 13.5 psi peak dynoing at 340 rwhp and another tune that runs 13.5 psi peak dynoing at 315 rwhp.

There's only so much you can do with air, fuel and timing. The vast majority of the power comes from boost.

317 rwhp on a tune only car on 91 Octane seems about right (maybe a bit low as some of the others seem to run ~325 rwhp at 13.5 psi peak)

No doubt your torque numbers are 15-20 rwtq low and seem to drop off faster than the piggyback tunes too.

It also depends on the dynojet. They are all not calibrated the same. My car on stock boost with dci and dps put down 258 whp/275 wtq on the DJ that I use...and there's nothing wrong with my car. It made 340 whp/382 wtq on map 6 with dci/dps. The delta is what matters. On the average dj, the car would dyno 25+ hp higher on both, but the delta is still the same.

[OpenFlash]

Hi guys,
I found a dyno results (from the same Dyno) of the original Dinan flash back in late 07 (when it was compared to an equally old PROcede version):
http://www.e90post.com/forums/showthread.php?t=104260

The conditions were very different given that it was tested in winter and the GIAC was tested in the summer. Dynjoet Correction Factors aside, there is certainly some ambiguity with respect to comparing the results to closely.

That said, the Dinan flash seems to be more biased towards the midrange than the GIAC flash. It also seems to match the GIAC flash, in power output, up to 5500rpm. Above that, the Dinan flash started to taper off while the GIAC flash holds flat right up to the rev limit. This is exactly what I felt, by the seat of my pants, when driving both tunes.

The GIAC flash, according to BT logs at least, runs more boost at higher RPM than the Dinan flash does/did.

Just thought some people may find that interesting.

Shiv

[DisGuy]

thanks shiv for all your professional comments...so what do you think about the GIAC flash personnally?

[Sniz]

Originally Posted by shiv@vishnu

Hi guys,
I found a dyno results (from the same Dyno) of the original Dinan flash back in late 07 (when it was compared to an equally old PROcede version):
http://www.e90post.com/forums/showthread.php?t=104260

Shiv

Holy crap...thats an old post.

Terry was on the 1st page...

[Kelvin1000]

Originally Posted by shiv@vishnu

Hi guys,
I found a dyno results (from the same Dyno) of the original Dinan flash back in late 07 (when it was compared to an equally old PROcede version):
http://www.e90post.com/forums/showthread.php?t=104260

The conditions were very different given that it was tested in winter and the GIAC was tested in the summer. Dynjoet Correction Factors aside, there is certainly some ambiguity with respect to comparing the results to closely.

That said, the Dinan flash seems to be more biased towards the midrange than the GIAC flash. It also seems to match the GIAC flash, in power output, up to 5500rpm. Above that, the Dinan flash started to taper off while the GIAC flash holds flat right up to the rev limit. This is exactly what I felt, by the seat of my pants, when driving both tunes.

The GIAC flash, according to BT logs at least, runs more boost at higher RPM than the Dinan flash does/did.

Just thought some people may find that interesting.

Shiv

I got something for you guys. This is Dinan Stage 2 on a stock car (mine) which made 284whp stock and then the first and second revision comparison where I contend that Dinan reduced boost (and lost a customer).

[IMG][/IMG]

[stillclaimndp]

Originally Posted by beepbeep

Actually, zero lag is pretty easy to accomplish; you just clock the processor backwards so that the cpu opens the throttle about 1.2 seconds before your foot touches the gas. You may lose a few pedestrians at cross walks over the years but the dedicated tuner is willing to accept the necessary compromises. The pre-trigger time for the throttle opening could be user adjustable, of course, to compensate for altitude, back pressure and the voraciousness of the local attorneys.

Yeah, pre-spool, haven't you guys seen minority report?