UR-Idiot Savant-S6

Silverbullet is the king on the B5 S4 forum, just wondering who's car is the wildest here.

cpayne

But he is rarely on the Audiworld forum....add 20% for HP at the FW..and ummmmmmm FAST!

Josh Moody at 350 at the wheels aint bad either ;-)

Here is an e-mail from Hap:

"s-heads

Well, yesterday was a long day. It was finished off with me giving Dave Jones
a well earned golf lesson at an indoor video feedback golf club I belong to.
It started off at Autosport Werks yesterday afternoon with the Happersized
machine finally finding its way on to their AWD dyno. The subject line at the top
says it all. At the Autosport Werks all-wheel drive dyno we pulled 402.4 hp
at the wheels not corrected for snot on 91 octane pump gas. Torque came to 393
ft lbs.

Conditions were hardly ideal which was just fine with me. Dave was a bit
concerned because the temperature at the time of the run was 84 F. Factoring all
the other weather factors, the desity altitude worked out to about 8500 ft. Did
I mention that the conditions were not ideal?

Thanks for this effort have to go out to of course Dave Jones and all the
guys at ASW. He built this engine and has been responsible for almost all of the
custom fabrication work that goes into making something that hasn't been made
before. More thanks also go out to Mike Pederson who has been on a similar and
often parallel track to mine. We have shared all our trials and failures. A
final thanks to Jim Latour, the owner of Turbo Engineering, TEC, that built my
turbo and provided the Garrett intercooler core.

My turbo is a TA34/T04E 54 trim Garrett hybrid with a 360 degree thrust
bearing. No, its not a ball bearing type and it has a smaller turbine section than
most of the larger turbos. This has caused some challenges mainly in the area
of wastegate float. That's why I run a large double WG spring and use my Apexi
AVC R to hold back the boost pressure. Matched up with this turbo is a
standard RS2 exhaust manifold. The boost curve for all 6 runs were just beautifully
smooth. No sharp angles and really reaffirmed for Dave just how nice the Apexi
performs.

Well, what happened on the dyno? The first run was setup with the Apexi on
low boost or 24 psi. The car pulled 382hp with some very interesting fuel issues
exposed. The mixture curve had us going rich between 3500 and 5000 rpm and
right on from there to red line. A couple of more runs at high boost or 27 psi
brought on a turbo surge that I really had not experienced with street driving.
The fuel curve gave away the surge gremlin as rich mixture. We swapped in
another ECU with some secret software compliments of Mike Pederson and we ran
391hp on high boost. The mixture was still a little rich passing mid range so we
backed off the fuel pressure and voila, the final run gave us 402.4 with the
mixture still showing some richness in the mid range and right on beyond that.
Is there more power on the table? You betcha. We will be developing the SW to
compensate for the richness issue and we continue to work on the surge
gremlins. The turbo performed flawlessly and the FMIC did a remarkable job keeping
the charge air cool despite the conditions. I did splash the FMIC with water
between runs to alleviate the heat soak off the engine and turbo. Dave reported
intake air temps right at the ambient temp for all runs.

Are there issues with driving this car on the street? Yes, a couple. When I
shift the bypass valve trumpets like a WRC rally car. The Honda crowd goes wild
when they hear it. With the turbo under load climbing an incline and backing
off rapidly on the throttle there is a surge that occurs. Beyond that it
drives like a normal s-car with a little more oomph. Is it fun? Oh yeah. That's all
for now but stay tuned for more.

Hap, livin large in Everboost, Maguire"

UR-Idiot Savant-S6

It's obviously not a drag car but I'm wondering what kind of an ET he would get, or 0-60

AntiSocial

That dyno run was done in 5th gear, so the numbers are off by 20%.

cpayne

I dont recall which gear it was done in but on a dyno you obviously want to be as close to 1:1 ratio as possible.

If he was in 5th wouldnt his numbers be 14% LOW?<ul><li><a href="http://elektro.cmhnet.org/~audi/01e/">http://elektro.cmhnet.org/~audi/01e/</a</li></ul>

cpayne

Not sure...probably isnt the best there..but get her on the highway and watch out!

lskolnick

Not the absolute fastest UrS4 but VERY VERY nice.<ul><li><a href="http://www.audiquattroparts.com/ElijahAllenAudiURS4.htm">http://www.audiquattroparts.com/ElijahAllenAudiURS4.htm</a</li></ul>

UrS4boy

Peformance: Scott Lampkin's southern California S4 had "400 Vericom-confirmed horsepower" which translated into 0-60 times of 4.5 seconds and 12.96 to 13.1's at 107.5 mph in the quarter mile.

PS: I only have a black and white photocopy of this article. I will "trade" and article of similar obscurity to anyone who may have either the original magazine or a least a colour copy of the article.

Dave F.