Jackson Racing Rotrex Supercharger System Info and Discussion

[jamesm]

Originally Posted by CSG Mike

That would be accurate... it gets really sketchy around 4.85V, but then that's why the kit took this long to get to market right? >.<

why in the hell would they do that on purpose? that just seems crazy to me...

[CSG David]

Originally Posted by jamesm

why in the hell would they do that on purpose? that just seems crazy to me...

Ask Toyota/Subaru that.

[jamesm]

Originally Posted by CSG David

Ask Toyota/Subaru that.

but they made their own maf tube. it's part of the JR kit. it could be whatever size they wanted it to be.

in any case the kit is pretty badass. makes cool noises.

[jamesm]

Originally Posted by normancw

Did Delicious do the CARB JR tune? I thought their tunes were speed density based.

They'd have to be to be safe enough to hand out to everyone buying the kit. The thing literally pegs 5v almost exactly at redline. Shocked the hell outta me.

[tendogy]

Originally Posted by Jackson Racing

The Jackson Racing CARB calibration is MAF based and designed to be used with the OEM catalytic converters. Our calibration has been thoroughly tested to ensure safety and proper drivability with CA91 Octane and above.

If you remove your catalytic converters, you would obviously need to have your car tuned for the changes.

-Oscar Jr.

That might ring a bell, since you replied to it They never mentioned who developed their tune.

[jamesm]

That's crazy. Maybe their cam timing keeps it under 5v. No way it's under the 4.85v cel trip though. I can't imagine for the life of me why they'd make it so small. Kinda rules out OFT as a tuning option...

[tendogy]

They said they were using an air straightener while they were developing the tune, would that do it?

I know nothing about tuning.

[*LongFella]

Originally Posted by OrbitalEllipses

@*LongFella how much space would you say there is between the top edge of the crank pulley and the bottom of the Rotrex/lowest point on the unit (including the BPV - is it plastic?)?

I didn't have time to bust out the tape measure, but I snapped a few quick photos of the area:

[CSG Mike]

Originally Posted by jamesm

why in the hell would they do that on purpose? that just seems crazy to me...

The tune works around the limitations of the factory equipment.

The tune itself is the result of several world renowned tuners' collaboration; Delicious was not part of the tuning team.

[jamesm]

Originally Posted by CSG Mike

The tune works around the limitations of the factory equipment.

The tune itself is the result of several world renowned tuners' collaboration; Delicious was not part of the tuning team.

I think we're confusing one another. The MAF tube is part of the JR kit. It's not a limitation imposed by the OE equipment. They made the MAF tube and included it in the kit. The got to choose how big it would be, and thus how much air it can meter.

[CSG Mike]

Originally Posted by jamesm

I think we're confusing one another. The MAF tube is part of the JR kit. It's not a limitation imposed by the OE equipment. They made the MAF tube and included it in the kit. The got to choose how big it would be, and thus how much air it can meter.

IIRC, it's the same diameter as OEM.

The MAF is maxed out way before redline, even with the JR kit.

[jamesm]

Originally Posted by CSG Mike

IIRC, it's the same diameter as OEM.

The MAF is maxed out way before redline, even with the JR kit.

I do believe it is stock diameter, at least it seemed to scale like it was (I didn't measure it). The one I tuned yesterday maxed exactly at redline. Literally hit 5v right as it went into the fuel cut, within one logging sample.

My point with all this is just that I can't see why they'd do that. It greatly limits people's tuning options (only ecutek supports sd, or adjusting maf overrun load calc params).

[CSG Mike]

Originally Posted by jamesm

I do believe it is stock diameter, at least it seemed to scale like it was (I didn't measure it). The one I tuned yesterday maxed exactly at redline. Literally hit 5v right as it went into the fuel cut, within one logging sample.

My point with all this is just that I can't see why they'd do that. It greatly limits people's tuning options (only ecutek supports sd, or adjusting maf overrun load calc params).

Because Ecutek is still the only truly viable option for tuning. Believe me, I wish I had other options as well...

[jamesm]

Originally Posted by CSG Mike

Because Ecutek is still the only truly viable option for tuning. Believe me, I wish I had other options as well...

Having used them all... I have to agree with that statement. Still seems like and odd self-imposed limitation though, just from a marketing standpoint. Some people don't like sd (I think they're crazy, but they exist lol).