preliminary single turbo results

[Gene]

hey guys, finally got the single turbo car running, spent about an hr dialing in the tune somewhat to make a baseline pull.
mods:
GP 6765 billet single turbo kit with .82 AR,
PTE 46mm gate
tial bov
3" exhaust
GP vertical flow FMIC
BONE STOCK motor never opened
GP driver side intake manifold with Q45 TB
PTE 1000cc injectors
GP 12gal fuel cell
twin bosch 044 pumps
aeromotive regulator@43psi base
AEM EMS 3.5 bar map/iat

using the virtual dyno software that trevor was using. the tune is far from perfect still but its a good baseline

http://i611.photobucket.com/albums/tt194/genesperformance/rossbaseline.jpg

[green-lantern]

Very cool Gene! I Look forward to updates.

[11secondFWD]

Pics of car and setup?

[Kibwe Walker]

Couple of things

1 how much boost was that run?

2 was that done on a 3rd gear pull in a 6 spd?

[Atrosity]

The graphs say in first post

6 speed 3rd gear
16psi

[B-Man]

As much as I want to run a single, that curve deters me.

What's with that dip in AFR at 4k rpm?

[Gene]

As much as I want to run a single, that curve deters me.

What's with that dip in AFR at 4k rpm?
again, i barely spent any time tuning it, especially the spoolup area, so there is lots to be gained there.
also, the turbo is capable of 800whp, it wont have full boost at 2500 rpm no matter how you tune it :P but that said once i get some more tuning done the spool should improve.

[Gene]

http://i611.photobucket.com/albums/tt194/genesperformance/fab/single/IMG_0154.jpg

[Atrosity]

You going to increase your rev limiter so you dont redline at 7?

[Gene]

its at 7600 right now but i wasnt taking it all the way up there yet.

[vr4_rider]

Nice, Gene! Keep up the good work.

I can't wait to see the final results on a stock longblock (minus intake and tb). I have pretty much the same setup, except mine is a stock longblock.

Where can I find more info on this single turbo setup? Pricing, pics, etc.

What size are your intercooler piping? All 3"?

[Gene]

tentative price is 7k for a full kit including FMIC/BOV/wg/headers/crossover/turbo/oil lines/necessary heat wrap/couplers/clamps and all the hardware.
the cool thing about this kit is you retain AC :)

[Boostaddict]

Good job Gene. Glad you have it running FINALLY!!!

That looks about right. This was an acutal dyno pull of a slightly larger single turbo on my car a couple years ago at 15psi (its changed a lot since then tho)...
http://northbendtech.com/wayne_k/vr4/misc/w-dyno-1.jpg

[FeaRpb]

Don't tempt me Gene

[Gene]

Good job Gene. Glad you have it running FINALLY!!!

That looks about right. This was an acutal dyno pull of a slightly larger single turbo on my car a couple years ago at 15psi (its changed a lot since then tho)...
http://northbendtech.com/wayne_k/vr4/misc/w-dyno-1.jpg
thats a 76 right?

[TurboSinceBirth]

Looking forward to the results when you get it dialed in more. :)

[Gene]

did a little bit more tuning tonight, still more room to go, gotta get the timing curve dialed in. no boost controller hooked up yet this is all on the wastegate spring which is 15psi
you can see the AF curve is still very conservative. the big bump in AF is due to the timing, like i said still need to play with it more.
http://i611.photobucket.com/albums/tt194/genesperformance/rosstune.jpg

[TurboSinceBirth]

Aren't you supposed to do the pull in 4th gear on a 6-speed and 3rd gear for a 5-speed with that Virtual Dyno software?

[Trevor]

Aren't you supposed to do the pull in 4th gear on a 6-speed and 3rd gear for a 5-speed with that Virtual Dyno software?
You can do it in either gear. The software knows the gear ratios/resistance. And you really don't need the extra resolution 4th provides as long as you datalog with the AEM internally. 250 samples a second is plenty to pick up all the little nuances of the power curve in 3rd.

Although 1.0:1 is the rule of thumb it's been proven that 3rd gear pulls kick out roughly the same numbers on the good dynos (IE a smart/eddy current and not an old style inertial Dynojet).

And BTW...7k in 4th on a 6 speed = 144 mph-ish. Really not a smart thing on the street.

[DoomZdaY]

Very nice and this is only at 5500rpm ?

[Gene]

couldnt have said it better Trev!

whats the news on your car? havent heard any updates for awhile.

[Boostaddict]

thats a 76 right?

That particular dyno was a 71mm actually. I have a few others too.

[TurboSinceBirth]

You can do it in either gear. The software knows the gear ratios/resistance. And you really don't need the extra resolution 4th provides as long as you datalog with the AEM internally. 250 samples a second is plenty to pick up all the little nuances of the power curve in 3rd.

Although 1.0:1 is the rule of thumb it's been proven that 3rd gear pulls kick out roughly the same numbers on the good dynos (IE a smart/eddy current and not an old style inertial Dynojet).

And BTW...7k in 4th on a 6 speed = 144 mph-ish. Really not a smart thing on the street.

I wasn't sure if it made a big enough difference because 4th is 0.918 gear ratio on the 6-speeds and 1.103 on the 5-speeds for 3rd, but I thought I'd ask.

[rossfashow]

whoa!!! so that softwhere dyno graph is relatively close to as a real dyno?

[Gene]

yup...

[akotten]

Looking great as usual! So what does it take to use this virtual dyno software? Any datalogger? I'm using a palm atm, so I was just curious if I'm capable.

[Gene]

currently it works off AEM logs, EVOscan and cobb Accessport logs.

[akotten]

shoot...is there any way to get EVOscan to work with OBD1?


edit: Apparently they do support OBD1....$57 USB OBD1 cable....hmmm. So $77 for everything...Kind of tempting.

[B-Man]

Any more updates, Gene?

[CoreyB]

Wow I didnt know about this software that is cool.

[green-lantern]

tentative price is 7k for a full kit including FMIC/BOV/wg/headers/crossover/turbo/oil lines/necessary heat wrap/couplers/clamps and all the hardware.
the cool thing about this kit is you retain AC :)

Hell, being able to keep the AC makes the price worth it right there. Nice setup man!

[Hard AttacK]

7000 dollars.....think about it. Is your time really that valuable?

[vr4_rider]

Have you added all the parts together? Parts add up very quick! Tubing is not cheap either. Usually when you do fab work like this, you buy u bends because it has the curves and straight sections all into one. U bends are expensive...to the tune of 30-40 bucks for ONE 2.5 or 3" U bend.

If you think you can corner the market buy making them cheaper, then go for it:)

TP

[familyMAN]

Why the steep drop in torque after hitting torque peak? Not hatin' just askin' to learn:)

[Unknownvr4]

What filter are you using? I tried using a 4" k&n on mine but it ended up being too long and hitting the headlight housing.