Texas Rear Turbos, they mount the turbo in the rear of the truck.....i've seen another one like it before, but can't remember if it was ever posted on here. i meet the owner Billy today at the Autorama, he's pretty cool, he had his TA there with this setup and said it made over 450rwhp, with the turbo setup, otherwise BONE STOCK. stock fuel system, no tuning, stock injectors everything. he said a stock BONE STOCK, 5.3 should make in the 375 range with this setup. it's interesting to actually look at. the damn air filter was under the rearend of the TA....seemed like that was a weird spot for it, like it would get more depis on it, road dust etc. and water would get into it easier in that location.

PM me for thier info:

the guy's name was Billy May, and the other dude that i didn't talk to was Dustin Burris.

 

I bet the word turbolag could find new meaning with the turbo mounted at the rear of the truck.Just punch it and wait for the tubo to pin you in the seat.Punch 3,2,1,ignition and blast off.

 

he said that the turbo is sized with lag in mind, looked me in the eye and said there's no more turbo with his kit than with one mounted on the end of your headers like the one parish is getting.

 

He's full of it then. I JUST dyno tuned an STS kit (the other system like it with the turbo in the rear) yesterday and it does lag more than a conventional system. It hits boost quickn (thus they can legally claim that it does not lag more than a conventional turbo), but full boost takes a minute to get to. It's more like a centrifugal blower than a turbo. Our systems hit and hit hard, like a shotgun blast to your back. I challenge ANY of these rear mount turbo company's to beat our torque numer: 557rwtq at 2600rpm, and that's on a BONE STOCK 75,000 5.3 liter. The car (STS) made decent power (410rwhp in an F-Body), but it is what it is. It's the Powerdyne of turbo systems. Does it make power? Yes. Do KMart shoes cover your feet? Yes. Get my point?

Seth

 

A turbo in the rear? What .AR housing is he using? What compressor housing is he using? The piping must be fuggin' long. Sounds like a purely stupid set-up to me.

 

And just to dispell this myth that these rear mount company's are claiming that there is no tuning needed, my 5.3L was running 125% injector duty cycle at 6psi and was seeing a consistant 4-6 degrees of knock retard on stock tuning. That was with IAT's at 115% over ambient (70deg F). So somehow, us, ATI, Powerdyne, Vortech, Magnacharger, Whipple, etc. all need extra fuel and timing work, but somehow the rear mounts don't? The STS kit I tuned yesterday was seeing 4-5 degrees retard and injector duty cycle on stock injectors was at 120%. Did the car run? Yes. Would it have popped eventually? Probably. We would never even consider pounding air into an engine without additional fuel and timing work, same goes for all the big names mentioned above. Maybe these guys have some magical way to make it work with NO tuning, but I guess the millions that us, ATI, Vortech, Whipple, Paxton, Powerdyne, etc. spend on developing kits has been wrong. The whole time we should have just sold the hard (turbo, manifold, tubing, etc.) parts and said "good luck".

All in good fun, competition is what keeps us all moving forward.

 

need a website slow or some pics. see if you can post. thanx.

dont knock a rear mount turbo...it works....but needs better injectors and tuning...not stock.

 

exactly what i was thinking...with a proper fuel system and injectors with tuning i think it would hit 400rwhp.

 

If the turbo is sized with minimumizing lag in mind then it would have a smallish compressor,that combined with the distance to the rear of the truck would put the system at a dissadvantage in throttle response when compaired with a traditional turbo setup.The only possible advantage the system could have,would be in cooling the boosted mixture because of the lengthened intake track.

 

he told me that it doesn't hit full boost until about 3500rpm, so it might be good actually for drag racing...launch and get it off the line and then hit boost for the top end pull once you're outta the hole. kinda like one of those progressive nitrous things, or boost controllers like parish has.