You are absolutely right about the M90.

The idea with this M62 kit is a simple, easy install, instant boost, safe kit.

The GM M90 is physically too long to fit in this kit's location. Only having 5-6 pounds boost with the M62 is the maximum safe boost on a 100,000+ even 150,000+ mileage 4.0's. Pulley'ing the M90 down to provide only 6 pounds of boost will take it out of it's efficiency area.

Want more boost and HP, you will need the M90 and that is someone else's kit.

 

BBuchta should get all of his customers to post videos of their Jeeps driving with the superchargers installed.

 

Many of the kits I know of have gone on heavily modified rigs with huge lifts, huge tires, heavy bumpers, winches and lots of armor. So videos of those jeeps wouldn't be very impressive, most of them are similar to stock performance with the supercharger after adding all the weight and modifications. They love the SC because it makes the jeep highway drivable again, but its still no race car.


My xj was fairly light at 4200lbs, 4.10's and 31"s with 9-10 lbs of boost it was a rocket, I wish I had taken more videos of it before I sold it. The only time I took it to the track (at 5800' above sea level ) I did 73 mph in the 1/8th mile ( I don't remember the time ) and no better in the 1/4 due to loosing the belt at the 1/8th mile. The launch was hard and it accelerated very quickly. I wish I had dyno-ed it, but never got around to it.


My new project is supercharging the 3.6 Pentestar, I have a 2014 2dr JK and am hoping to get really high HP numbers from it.

 

I've seen Colorado Insane's videos. It actually does really well with the m62 and he is running huge lift and what looks like 35s or 37s.

Your XJ was (is) a masterpiece. Very clean build. Would love to have seen the 10psi launch.

The JKs are getting pretty crazy too. Most JKs I see have $25K+ in aftermarket parts on them. Are you sticking with the M62 or moving toward the M90 for the P*?

Please keep us updated. It's fun to watch these projects come together.

 

I have a stock Rubicon, planning on keeping it light weight, near stock height, and add 6-8lbs of boost. The M62 is at its limits at 280-300hp, with the P*'s 285hp stock it will need at least an M90. I would like to see if an m112 will fit.


There are days when I miss my Cherokees (I've had 4 different ones from time to time) but overall I'm enjoying the lower maintenance of my new JK.

 

If anyone has a kit with no split second box I have one I'll be selling shortly. I've modified the kit so much that it will no longer work for me.
The following is for sale:
split second box (loaded with original tune)
cable from box to computer (to modify tune)
cobra intake elbow
fuel line tee
sc to tb adapter
extra injector
aem wideband 30-4100, brand new 02 sensor included

500 + ship for the lot...

PM me if you're interested

For feedback on the kit... it works great as is, but I didnt leave it alone, haha. I'm getting 7.5# WOT with the included pulley with charge temps 60-70 degrees over ambient as measured with a cole parmer thermocouple in the manifold. The 7.5# is with a 75mm throttle body though. The last 20% of tps position varies the boost from 5-7#, and I only get 7.5# in 3-5 gear at mid range rpm.

 

Also, I dont know how other guys are datalogging but I found I got the best results by putting the fuel map on screen up on the lap top and setting the wideband in front of it, then taking video of the screen/wideband during a run. That way you can correlate an afr to the exact cell the engine is running on.

I'm not tech savvy enough to figure out a full automated way of sticking the afr data in with the split second data, haha.

 

ThereMikeGoes-
What is your setup now?

 

Nothing out to lunch.... Outlet of sc has casting flaws smoothed, inlet is ported to 75mm-matched to the northstar tb, blended the jeep intake to the kit parts at about 62-63mm. Short 3" dia air intake to an 8"x6" round uni filter mounted on the cowl-outside air. Basically the whole intake tract is 3" to the compressor.

 

Nice and short inlet flow, that's great.

What are you doing for tune?
Where is your intake air sensor mounted?
How is your MAP sensor plumbed?

 

I may be ditching jtec altogether, not sure yet. It's a toy an there's no smog checks here so that's an option for me.
Iat is in the elbow pre tb.
Map is off the jeep intake with a fairly short hose.
The piggyback injector is doing a great job in every case except a hard boost transition at lower rpm's

Edit: the intake is like ~12" long, but 3" or more all the way to the sc compressor

 

Anyone have experience with water/methanol injection? What size nozzle/boost pressure did you start with. I have a progressive devils own kit in the mail...

 

Hey Marty, what's this side mount kit sound like?

 

Great. Includes a modified intake manifold and the SC bolts to it. No cutting the hood. No more core fees. Works better than the top mount as the discharge goes directly into a plenum. Everything else is the same.

 

I couldn't tell from your blog or this thread- does the kit require a longer serpentine belt, and is that included in the kit? Pardon me if I glanced right over it...