Well Howdy guys! I just bought a 2007 Crossfire limited after a ton of reading and drooling. I've also spent about 16 hours searching and reading this and several other sites absorbing information.

I have a Rotrex install or two to knock out, another couple of kits to build, then get my spyder back to stock to sell, and then I should have the time to turn my full attention to the crossfire. However, that is going to be a few months down the road.

That said, I took a Rotrex and held it in the engine bay to size things up:







Now this one is a bit smaller then what I would use. It is a C30-94 (400 HP) but for this application I would use a C38-61 which is roughly .5" larger (height and width). The C38 is good for another 150 at the crank over the C30.

The rotrex is simply an awesome way to go. It offers at least a dozen areas of improvement over the blower on the SRT-6. Although cramped, I think I see a way to make it fit. First, I would have to relocate the reservoir. Then fab up a quick bracket to set it as shown on the same plane as the other pulleys. The tight spot is the clearance for the intake. It looks like I would have to run a 90 off the Rotrex and down and plumb it under and forward. This means raising it as high as I can without hitting the hood. I also see another option but I'll leave that one alone for now as it is my second choice.

The outlet side is beautiful as I would run it straight back to an air/water intercooler and into the TB.

I've read about the tuning challenges you guys have had and will spend my spare time looking further into that area. That said, I have a few tricks up my sleeve that I hope will make things easier.

However, what I would really like to do is find out what tool the "shops" are using to tune the ecu? I've read up on the software (that the guy in france with the v-8 swap mentioned) and it looks like it can change some settings in "developer mode". I just haven't figured out how much and how far it will go. Someone has to know what combination of hardware and software they are using and if it is written, i can figure out how to use it., but I guess we'll see.

I'm excited to be here and over time I'll prove myself to be a valuable member. I'm very passionate about cars, I know my stuff front to back, and I tinker constantly. For now I have some clean up work to do before I can really focus on this car. However, I look forward to exploring the limits of the stock motor, tranny, and beyond!

 

Does it void warranty?

 

Not if you live on Mars!

 

Welcome aboard, Sir. I truly do hope that you prove everyone wrong. I will not hold my breath, but I will be the first one in line for a turbo kit if you get everything ironed out.

Good luck with the Toyota sale and on the XF project. Keep us posted.

 

Welcome to the group Web 3.0. Hope you prove everyone here wrong. Congrats on the new wheels!

 

Welcome to the Machine.

Great info here, as well as nice people.

Looks like you have plans to add to the Mods.

 

Supercharger

 

Thank you, been so damn hot on a turbo I was not thinking.

 

I would love to see this project take off

 

Well, I just ordered the Rotrex for this install . I'll post some charts as well as my analysis shortly. The really cool thing about the C38 is when you compare it to the stock blower on the SRT.

I ran the numbers last night in another post and the stock blower looks like it is running down near 59% efficiency at 20psi. This Head unit looks to be in the 74 - 76% range at the same cfm.

I still have a rotrex and a turbo install ahead of my car. However, I do hope to wire my piggy back of choice up and confirm that it is going to work.

Once I have the bugs worked out while everything is still "simple", I can then fab up the bracket to install the Rotrex, mount the IC and HE, and then close the loop to the TB.

I plan on running an 80mm pulley and closing the SC inlet off to limit top end boost with a restrictor.

This is going to get very interesting in the near future!

 

This is going to be one to watch !!!!

 

Well, here is the flow chart for the blower I ordered this morning. As mentioned previously, it is only a half inch larger then the C30-94 in the pics. Spinning the blower up to its redline and choking off the top end boost gives it a nice kick in the pants on the low end. Combine that with the other characteristics of the Rotrex and you have a serious contender to the twin screw!

I'm starting to get pretty excited. In fact, so much so that I'm taking off the week after next to see if I can't take care of some of my obligations ahead of schedule...

That said, anything I do manage to sneak in on the crossfire, I will be sure to post up.

 

Just wondering how much does one of those SC cost?

 

The head unit itself retails for around $2100.00

 

I have a piggyback, wastegate and larger injectors from my SC build just sitting on the shelf in my garage. Shoot me an email at rudy@jr-industries.net if you're interested in them or want more info.

 

subscribing to this one!
Screw getting the MR2 back to stock... focus on the crossfire!!!! lol

Welcome!! Looking forward to your progress.

 

Well, I don't know if it is progress but at least things are moving. I bought an AEM F/IC and injectors from Rcompart to get me started. The injectors probably won't carry me to the end, but they will get me far enough for now. I'm really curious as to when the stock exhaust becomes too restrictive so I will definitely be exploring that threshold.

The Rotrex gets here on Thursday! I have to hook up the AEM and run it stock for a little while to build the MAF clamp maps. However, not until after I install the LC-1 and order the DashDyno SPD for recording the short term fuel trims at various points.

I've been studying the OBD-II dataloggers and the SPD looks like the unit of choice since it allows external inputs. The more things I can port in from various sources (wideband, etc.) the easier it will be to tune. The SPD also offers a road dyno that is essential. I've tuned all of my MR2 setups with datalog labs and it has been proven on the roller by me personally several times over. From what I've read so far, the SPD looks to be in the same league, but I guess time will tell.

I was talking to J&S about their vampire knock control product at one point. However, I don't think it will be necessary due to the Mercedes ecu being able to the same thing (retard timing in individual cylinders). We also use the same bosch knock sensor as he does except that ours looks to be a dual channel system.

All in all, I have a pretty good strategy mapped out but with a few things to test before the actual build.

 

man the crossfire community is persistent. i still check in randomly to see if anything has been done with going fi on the crossfire, hoping to get back into a used one and doing a blower install. five years since we started trying to do this, and still nothing. alot of you guys are new so you haven't lived through the heart break, lol. good luck though web, over under of 6 months before you quit? lol, j/k.

 

Im keeping my faith w this guy!
Just dont make me eat my words Web!!

 

Sounds pretty interesting. That's quite a nice looking machine with a great waxing job. Congratulations and welcome aboard.