I am a tuner although it is mainly in the NHRA drag race world now, I have worked for GM Motorsports Division, Roush racing, along with many independent teams. I have won national championship's in both drag radial and extreme dragster classes and believe I still hold the world record for fastest and quickest 4cly drag time and just a few tenths off the fastest ever import time. I have raced promods and outlaw 10.5 cars for some time as well. I had a performance shop for many years and my own dyno but we sold out to a large shop here in Atlanta. My old partner just opened another new shop that i have full access to and I have access to two race team shops with dynos who I work with on a consulting basis. We might be misspoken as none of it is really mine anymore.

None of that will do any good with the STR computer but I am going to try a few routes to go around it, behind it, through it or maybe test out whats out there already as well.

BTW here is the dyno sheet. I accidentally printed the second run out but you get the idea the third looks the same just a bit more power I will print it out tomorrow when I am at the shop. Also snapped some pics of her

 

Hey that's good enough for me... As far as the jag computer and it's lockdown state, you think a standalone motec / apexi / maybe megasquirt might be the way to go to make real power? Or you not going to try beyond what the stock ecu can do?

I've got a Ph.D in EE, and my brother has a shop, but as of yet I don't own an STR, but I'd be willing to help in any sort of development...

Take care,

George

 

I have to figure out how this board works still. Any way to multi quote people?

more pics

 

^^^^^Thats one hell of a resume you got there bud Welcome aboard its going to be a bitchn' ride now that you got your new toy

 

Let me know when you crack the computer, I'm only 4 hours away

 

A standalone would have to be in conjunction with the factory ecu to communicate with the TCM make all the gauges work etc etc etc.... which can be done. I was thinking AEM since its so much cheaper, Motec is my system of choice just an M800 and harness isn't cheap. Working the factory ECU would be the best choice for most people cost wise.

As for the key to big power all the control in the world will only help you manipulate what you have to work with. On a stock car tweaking the A/F and timing is going to make power, just not a lot. On a built car running more boost, an intercooler chiller etc... will of course make more sense to be able to control things. Time will tell

 

Yeah an AEM Piggyback would prob work. The STR seems to somewhat benefit from intake / exhaust mods. Biggest pulley is +3lbs and it requires shaving / machining the supercharger snout. At that point the stock Eaton M112 is pretty much maxed out. Water / meth on the Ic's and prob an FMIC would add some power too...

Beyond that, AVOS has retrofitted a twin screw Whipple type design onto an XKR...

Take care,

George

 

A week or two back a forum member, mike? Has an 03 str in need of a motor. Ttwotees got his refurbisbed long block for 4.5 k

 

I think that member with the broken STR was across the pond if I'm not mistaken.

 

LOL! vance, ya got me. Sorry George...yep, a bloak in the UK got a toasted 03 STR....sorry. On the way home driving in 55 degree N.Y., DSC off, "Sport" mode on, very short roll then nailing it...what a beast. I'm estimating an obvious sub 5 second 0-60 and 110+ mph before the 1/4 mile is over. We need an ECU tune, blower port/polish, and "Chiller Killer"!

 

The killer chiller looks promising. I am ordering a water/alky kit next week to see what that will do while she is still stock and as the build growes. I think its a good match or the little heataton blower.

BTW anyone know how to contact Mafioso? I PMed him but looks like he hasn't been on in a while?

 

Just out of curiosity how many miles are on your STR qikCat?

Cheers!

 

79k miles, it's in great shape for the miles and year. I set aside some money to do little things but the previous owner (2nd owner since new) had everything in tip top shape. Now I am spending that on black wheels and tint

 

Ironic you mention Mafioso. We spoke daily until three weeks ago. Last night I PM him. Do ya want to pop on his air intake elbow? A def. improvement in breathing. I'll give him a call this afternoon. Heat is definitely the main issue in maintaining power with this powerplant. The pro-blower shops insist their port/polish will help some. Methyl alcohol has been discussed but has anyone stepped up on this? qwikcat may be the first? ttwotees did a "Snake Bite" on his blower and a hi-flow cat back on his exhaust. We eagerly await his dyno pull cause his setup will clear the way for those waiting to invest in the same or similar design. As I mentioned earlier, after a set of rear CAT struts I'm gunna make a move on an off the shelf ECU flash.

 

Yea I want to do the elbow and low temp stat. I will have the alky kit on it's way first of the week and then once I have it dialed in I can make back to back runs with it on and off as I mod to see how it affects the car both stock and as I turn the boost up.

The Ecu flash should be my last thing as I hope to have someone make adjstments for the mods and have an idea how A/F changes on the stock ecu as I add boost and just how much we need to lean it out. I was pretty shocked the A/F was as good as it was on my first pulls

 

qwikcat, do you mean the stock A/F ratio you observed on the dyno is good for power or for engine safety? Jag built in rich settings on the top end of the RPM scale for engine safety sakes.

 

The car is setup to be stock, to perform day in day out for a non-enthusiast. They build a LOT of safety into the A/F. You really want some clueless Dr who bought this thing new exerting his ego and running it lean and popping a piston? (no offense BFG ) That would be a warranty / pr nightmare for Jaguar.

Take care,

George

 

George! "Clueless Dr.?" LOL! You look me up on Facebook or whatever?

 

Lol my best friend is a physician. Great guy, but more money than brains, especially when it comes to cars.

I still remember the first car he bought out of medical school was a BMW M3. In his efforts to impress me, he takes me out in this thing. Tachs out 1st, Bangs 2nd, goes to bang 3rd at redline and slams it into first and lets the clutch out... I think the car had about 1500 miles on it.... Bye bye motor...

Ironically, years later there was some controversy regarding the flexibility of the trans mount in that Bmw e36 chassis - more than one person had done what he did, and it was suspected that the trans mounts were flexible enough to allow the trans to move under load, causing the shift pattern to migrate. BMW never acknowleged it, but Rob Levinson over @ UUC Motorwerks did a brisk business of selling a reinforced poly trans mount.

Then there was the time that he got his Moving Violation / I need attention please bright yellow Porsche. There's this section of road that leads into my development that's basically a straight line. He floors it, and decides to take the turn into the neighborhood at 80 mph +.. Famous last words "This thing handles on rails, watch this"... As we go up the curb and into a front lawn... Thank god we didn't hit the house...

I just sold him an 05 XJR, that I should have kept for myself. We'll see how this goes...

And no facebook here LOL!

Take care,

George

 

Yep, BMW has weak rear differential mounts too. Holy cow! Your buddy's description fits me to the tee. LOL! Kidding.