In tune with John Kuhn!

Red Baron · 04:33 PM

John will be coming to town for a few days of Shark Tuning and what I hope are the finishing touches on my Turbo 928. It's been quite a saga since we had it on the dyno when it made 488 at the wheels at 8.5psi. We are planning to run it up to 12psi if all goes well. The plan is to make a dyno hit however I am not having much luck finding one in the New Orleans area. Results will be posted if we do.

Wish us luck!

Fabio421 · 12:45 PM

What type of dyno are you looking for? Heres a place w/ a Mustang MD250-HD dyno. They aren't in New Orleans, they are in Baton Rouge @ 6225 Hollyfield Dr., Baton Rouge, LA 70809

http://www.tpsperformance.com

Heres one thats closer but I haven't found a website for them. Shreve Automotive, 1341 Carrol St. Kenner, LA 70062 (504) 469-1323

This dyno locator might come in handy for you. http://www.mustangdyne.com/newlocator.php?state=la&full=Louisiana

Red Baron · 04-11-2011, 02:07 PM

Everything you have on those links close to me, except for Baton Rouge are all closed... Katrina did them in. I knew about the one in Baton Rouge but was trying to stay closer.

Also Baton Rouge presents a problem unless we can go Monday. I'm looking into it but we need all to go very smooth Saturday and Sunday for that to happen.

Red Baron · 04-11-2011, 02:20 PM

It figures... TPS will not be open Monday however I did take the 9am slot on Tuesday.

Red Baron · 04-11-2011, 03:52 PM

Change in venue.

SOUTHERN HOTROD!

Herr-Kuhn · 04-14-2011, 04:49 PM

The Triple T made over 500 Wheel HP a week or so ago and that's a 4.7 liter on 1970s turbos...I see no reason your sar should not introduce you to the 500+ WHP club.

Mark keeps saying he is going to show up for the tail of the dragon drive this year so he can show a certain loud-mouth all about turbo 928 power. I'd pay money to see that.

sonett3 · 04-15-2011, 03:49 AM

You let the cat out of the bag.

Twinscrew928 · 04-18-2011, 06:30 AM

Gotta see that.

sonett3 · 04-18-2011, 01:42 PM

Quote:

Originally Posted by Twinscrew928

Gotta see that.

Olsen,

Go back and play in your sandbox... Anyway all you will see is the tail lights...

Fabio421 · 04-18-2011, 06:55 PM

Hey Baron, any updates?

Red Baron · 04:30 PM

Waiting on the dyno sheets via email so I will have to post those later.

Today we were on a Dyno-Dynamics and made 454RWHP and 490RWTQ on 12psi of boost. I have the numbers from my low boost setting of 8psi and those were (I can't remember exactly) about 394HP and 438TQ... I will post the sheets once I get them.

The tune is well dialed in after countless hours of Shark Tuning. The car returns to idle smoothly and has a clean cold start.. Considering I am using a S4 idle control valve on a early 32V ECU with S4 intake,,that's pretty darn amazing. It return to idle better than when the car was stock!

We are however at the limits of the ignition control system and also the fuel injector size we can use. Without knock sensors and the ability to run a bigger injector, among other limitations to the current system, I think we have squeezed the most power we can get. In addition we have the car tuned a little conservative for engine safety reasons. This engine can for sure handle more boost and would make more power with the right fuel and ignition systems. Because of these limitations and challenges for the early 32v cars, I highly suggest using the S4 platform for higher boost applications.

I truly cannot thank John Kuhn enough for his help in every phase of the build. In addition to developing an intercooler system, his commitment to helping me get the car sorted and tuned is the only reason the results are what they are. Without his expertise and involvement, the results would be nowhere close to what they are. I have spent a lot of time with John and can honestly say he is as thorough and meticulous as anyone I have ever met. If you are thinking of doing a turbo system on a 928 you will not find a better resource than John.

I'd also like to thank Jim Coman at Coman Performance in Alabama. After having rod bearing failure in the first build of my motor (built by someone else), Jim rebuilt my motor and worked through the issues that caused the problem. We've ran the living hell out of this car tuning it and on the dyno and it's held together. Although he never gets on here, I wanted to recognize him for his help.

It's been one helluva journey and tested my commitment like never before. I am in somewhat of a state of shock that it's actually "finished"...if there is such a thing with 928 projects......

Fabio421 · 04-19-2011, 07:07 PM

Congratulations Abby. But you're right. They are never truly "finished" are they? I'm glad you saw this project through to the end. Many lesser men would have given up a long time ago. Heres to you. :cheers:

What are the specs on the turbo you are using? What size injectors are you running? Feel free to answer in a PM if necessary.

Herr-Kuhn · 04-23-2011, 06:11 PM

I'm not sure the results from this Dyno are easily compared to other dynos. I can say this because I have seen the same power from cars that didn't punch the MAF map as deeply as Abby's car did. I think if he ran it on a Dynojet he would see a higher number, but I'm speculating. I know on the road the car is really very fast. We did a lot of high speed pulls through 3rd and into 4th gear to 140+ MPH and the car pulled quite hard. At one point we came up on a trooper at just about 100...that put a damper on things the rest of that day. I left the air fuels in the high 11s to mid 12s in the interest of the environment the car will be living in. 80F and 80% RH in April...you get the idea. Also, keep in mind we had little to no airflow across the intercoolers, so it would not surprise me at all if on a cooler day and a Dynojet that his car can easily make the 500 HP number.

At the end of the day it doesn't really matter because in the real world the car runs very well and will be more than a handful for just about anything out there.

Red Baron · 04-25-2011, 08:31 AM

Quote:

Originally Posted by Herr-Kuhn

I'm not sure the results from this Dyno are easily compared to other dynos. I can say this because I have seen the same power from cars that didn't punch the MAF map as deeply as Abby's car did. I think if he ran it on a Dynojet he would see a higher number, but I'm speculating. I know on the road the car is really very fast. We did a lot of high speed pulls through 3rd and into 4th gear to 140+ MPH and the car pulled quite hard. At one point we came up on a trooper at just about 100...that put a damper on things the rest of that day. I left the air fuels in the high 11s to mid 12s in the interest of the environment the car will be living in. 80F and 80% RH in April...you get the idea. Also, keep in mind we had little to no airflow across the intercoolers, so it would not surprise me at all if on a cooler day and a Dynojet that his car can easily make the 500 HP number.

At the end of the day it doesn't really matter because in the real world the car runs very well and will be more than a handful for just about anything out there.

THAT was a close one!! The car is very fast..wait until I produce a time slip. I'm not going for a record 60 foot launch because I am going to be careful to try and not break stuff.. I'm thinking the trap speed at the end of the 1/4 mile is going to give a hint as to how 'fast' the car really is.

dcrasta · dcrasta's Garage

I love reading about this twin turbo kit. Freaking amazing freak of nature/engineering! Gotta love a well designed turbo system. Congrats, Im sure its a big ole kick in the pants!

MarkRobinson · 06-07-2011, 02:14 PM

Good Job Abby & John: sure wish you were closer to Austin that you are.

2Quick4u928 · 06-08-2011, 09:40 AM

Red Baron...business opportunity knocking for you I believe there in Nawlin's :-)