After speaking to two custom turbo fabrication companies, they both told me they can single-turbo or twin-turbo my Crossfire. The only problem was that one company said that they were worried about creating a custom fuel system for the car since nobody over there worked on our engine before. The biggest problem for me was the lack of money that I have to do it and the fact that they would need the car for 2-4 months. But, in two years, when my lease is up, I might turbo it then. The cost...between $12,000 and $15,000! The best part about it...an estimated and projected goal of 360 rear wheel horsepower at 6-7 lbs of boost (in the twin-turbo set-up). I also said that I might have others who would be interested in a turbo set-up. So, if anyone is interested, vote on my pole and then if anyone wants more info, pm me!

 

12k-15k?

ouch.

 

that's way too much, there are cheaper options already out for more power.

 

You can have 300+ with Renntech or Brabus for the same amount plus the warranty! I would trust them more because they are exclusive tuners for Mercedes engines.

 

Yeah or just buy an SRT6.

 

Why would anyone buy a turbo for the XFIRE?
I drove the xfire against the Audi TT, Lexus coupe and Porsche boxter at "the Art of driving" event.
Closed course. The Xfire beat the crap out of them in acceleration off the line. There was a very noticeable LAG when you stomped on the gas with the turbos. The Xfire just threw all that power out the as* end when you stomped on it. I love my XFIRE without the turbo. I'm going for a hop up with out it.

 

The SRT-6 does not come in stick.
X'ed, I am not trying to be rude, but can you prove to me that there exists a more powerful engine package for less than $12,000-15,000? I believe Startech has a bolt-on supercharger kit making about 330 horsepower, for $8,000, but it is still nowhere near the power of the turbo set-up.
The Renntech/ Brabus cars don't put out anywhere near the amount of horsepower that a twin-turbo set-up would do for the money to the Crossfire (about 306 crank horsepower with Startech/Brabus 3.8 liter conversion for $14,000 compared to roughly 390 crank horsepower with modest twin-turbo boost levels). The Renntech 410 horsepower supercharger kit cost $22,000. For about the same price as the 3.8 liter upgrade, depending on which company you choose, you can get about 90 more horses. Also, from what I understand, these companies do have a warrantee, only on their parts. So if a turbo breaks, they would be responsible for the fix. Also, I feel that the Crossfire has great low to mid-range torque, which would help reduce turbo lag. I am simply not happy knowing that over about 3800 rpm, the engine seems to be loosing steam. I'm just trying to expose all of you Crossfire owners to other options available within the market.

 

how bout kleeman? talked to several of their resellers and they say that it puts around 330ish to the wheels, then if you tune it you can pickup another 20 or so, that right there is close to 350 at the wheels and would be under $12k installed and from a known mb tuner.

 

I was looking at kleeman's website just a second ago, and it seems that their horsepower ratings are at the crank.

 

Sell your car and buy an SRT6 and mod that to 400hp.

 

Dan, I totally respect your opinion, but the SRT-6 has no manual tranny offered. Without it, driving such a great engine suffers without a stick, no matter how good the automatic is. And, I see it as pretty cool to have a turbo Crossfire. The sound of a turbo is pretty persuasive to me also, as well as it's driving characteristics.

 

Try it you'll like it!

 

400 hp is nice in the SRT-6, but it is still an automatic.

 

I spoke to another custom turbo fabrication shop in California, and they say that they will twin-turbo the Crossfire for about $10,000 and they will also warrantee the parts for 1 year.

 

why twin turbo? why not single, its cheaper and you'll make more power.

 

Well, from what I understand, being a V-6 engine, it is easier to use a turbo for each bank of cylinders...a single turbo will force you to connect both banks of exhaust manifolds into one, which possesses packaging problems. And, why would a twin-turbo make less power than a single turbo set-up...wouldn't you just raise the boost levels?

 

There is no stick option because DC's manual transmissions for cannot handle the torque. So if you supercharge your manual XF you will either burn you clutch or it will slip - maybe it breaks (sorry I hope you know what I want to explain - I am no native English speaker).

 

Tim CH, I am totally aware of what you are saying...if I do go ahead with modifying the Crossfire, I will build-up the tranny with lighter weight, stronger parts. The only problem is whether or not the cost of fully modifying the car will be worth not purchasing a Lotus Elise in the future.

 

i don't know exactly why, but i'm sure someone else can explain it. i just know that with all cars that came tt in the us people always convert them to single turbo to make big numbers, like supras, rx7's, 300zx's and so on.

 

A single turbo kit will spool a lot quicker than the twin under high boost situations. But if you put more that 10-12 psi to your car you need a serious build-up anyway, so if your not planning to run high boost, the twin turbo would be more efficient. So says John Bell Author of maximum boost. I went to a Nissan College, so I am familiar w/ twin vs. single turbo.