BR Performance had been developing a Roots blower for some time, using later Gen Eaton MP-62 than what is on the B18 Jackson kits.

Really not much difference in BRP or JR developing the kit, other than not using a rising rate FMU for fuel tuning.

The JRSC style hotside systems can be intercooled, but they have to use a custom intake manifold with a air to H20 heat exchanger, preferably Laminova intercooler cores.

 

What year Si was this? 15psi and no intercooler, 250whp on a JR kit, huh? Their "race" kit runs 8psi and with a Hondata reflash it's putting down 224whp. You should have been making a lot more than 250whp at 15psi. In order to run 15psi on an M62 size blower, you must have been spinning that bad boy near or beyond its limits. What type of engine management were you using?



Having owned a JR kit for my Miata years ago, I probably wouldn't buy anything from them again. That JR product put a bad taste in my mouth about them. Drivability sucked. I couldn't believe they actually released a product like that. I took it off and sold it about 4 months after I installed it. Not long after that, a third party (BR Performance), started making improvements to the JR kit, originally based on an M45 unit, and subsequently designed their own M62 kit, which is probably the best roots style FI kit out there for the Miata.

You may want to look here:

BR Performance S2000 kit (forum link)

Specifically, pages 1, 4 and 7 for pics and a video. There have been quite a few delays, mostly due to some realignment within the company with other product lines, but the kit should be finalized soon.

 

Jackson racing was having problems with installing this blower as a coldside setup and they wanted to stand clear of a hotside setup. Basically there was not enough room on the coldside to have an air/water intercooler inbetween the blower and the motor. So they opted not to go through with the project.

 

Ahhh thanx, I wish the first 10 post could have just said that



My SI was running hondata. Sorry for my typo it was 12 psi

jrSC 12 PSI
Hondata running it with chipped p28 obd1
Kamikazi 4-1
Test Pipe
Tanabe Race(stooppid loud)
z10 traction bars
Comptech springs
Tockico Illuminas
Boost and fuel guage
GSR Cams
AEM cam gears
All tuned on a dyno
Car made 241 HP at 9000 rpms and was still making power but reluctant to go higher.
Has upgraded valve terrain. I do not have pictures though

 

Umm, yeah

 

Umm........ YEAH!

 

Where you actually getting 12 PSI? Where you using a Stepper pulley and a CRV crank pulley?

The main reason for the low HP# is due to the Huge IAT's when spinning a Eaton 2x's it's original rating.

 

Yes I was getting 12 psi all day every day

 

With what pullies?