Avenger Supercharger install pics, Clackamas, Or.

**mudb8** · 05-08-2009, 11:27 PM

Here's what I did today...

the rig is a automatic 02 sport with a 2" suspension lift and 1" bl on 35" swampers with 4.88 gears...

supercharger still bolted to the plywood packaging base..

first I pulled the tb, removed the external screw in and press in vacuum ports, the screw in's bot pluged with pipe plugs including the IAT sensor, the press in's get soft plugs hammered in, replaced the injectors with the suplied injectors, then bolted the charger mounting plate on.

the rear wire loom fastner got ground off... well completely removed from the manifold.. from reading the instructions I figured it just needed to ground down a bit.. not the case here..

that wasn't enough to get the plug on and off easily, so I took it a step farther..

bolted on the super charger which required bending the ac lines around a bit.

then on to the front support bracket which bolts right to the power steering pump. there was a 1/8" gap that got filled with two washers on the upper bolt.

next came the removal of the radiator and ac condensor to install the charge air coolant radiator..

I drilled holes through the "v" bar support to mount the cooler with hayden zip ties..

I started on getting the plumbing done and that's where I'm at right now... I might get a bit done saturday if it's not to busy. otherwise monday it'll likely be completed.

**RogueSpear2023** · 05-08-2009, 11:51 PM

Very Cool, looks like a lot of work, for me it would be more than one day.

What do you expect for HP/TQ numbers?

**mudb8** · 05-08-2009, 11:57 PM

Quote:

Originally Posted by RogueSpear2023

Very Cool, looks like a lot of work, for me it would be more than one day.

What do you expect for HP/TQ numbers?

http://www.avengersuperchargers.com/

The Avenger Supercharger for the 4.0L Jeep engine adds 100hp and 55% more tourque. With the Avenger Supercharger, the 4.0L Six Cylinder is capable of producing over 290hp. Due to the efficiency of the intercooler, we are able to achieve this level of performance at only 4.5-5 psi of boost. There is no cause to worry about premature engine wear or failure.

**Unlimited04** · 05-09-2009, 12:12 AM

what are you doing for fuel/timing management? Avenger claims nothing is needed and the factory computer will just figure things out, but they're completely wrong. A SplitSecond FTC-1 is really needed to retain a safe A/F ratio under boost. Check out www.splitsec.com.

**mudb8** · 05-09-2009, 12:52 AM

Quote:

Originally Posted by Unlimited04

what are you doing for fuel/timing management? Avenger claims nothing is needed and the factory computer will just figure things out, but they're completely wrong. A SplitSecond FTC-1 is really needed to retain a safe A/F ratio under boost. Check out www.splitsec.com.

well, it is actually, the computer will learn what it needs over multiple restarts of around 500 miles... what it really comes down to is whether you want to wait for it to learn or you can piggy back it, get full performance immediately and make it better.

we'll see how it turns out tho, the modus is in the back pocket.
this is the first avenger, tho I've done several turbo's so it's not my first rodeo.

**Unlimited04** · 05-09-2009, 08:28 AM

Quote:

Originally Posted by mudb8

well, it is actually, the computer will learn what it needs over multiple restarts of around 500 miles... what it really comes down to is whether you want to wait for it to learn or you can piggy back it, get full performance immediately and make it better.

we'll see how it turns out tho, the modus is in the back pocket.
this is the first avenger, tho I've done several turbo's so it's not my first rodeo.

Well, unfortunately you're wrong. The factory ECU is stupid, and will not compensate for boost, timing and fuel requirements. If you don't put a Jeep on a dyno and measure the A/F ratio, how do you know the engine isn't running lean? If you're not looking for the problem, you won't find anything - supercharger or turbo alike.

Split Second on the Avenger Supercharger (theres even pictures):
http://www.splitsec.com/spike/jeep/spikejeep.htm

Quote:

Before installation of the FTC1, this Jeep has a serious lean spot in boost. Both problems were fixed by the FTC1.

Talk to RIPPMODS and follow their thread - they will tell you the same thing. The stock ECU won't compensate. Call 505 Performance - they will tell you the same.

Even Kenne Bell acknowledges the factory ECU is NOT capable of keeping up with supercharger demands:
http://www.kennebell.net/techinfo/dodge-jeep-chrysler/jeep40tech.pdf

Quote:

Still don't believe that the factory ECM has to be modified for a supercharger? Read on.

Read here:
http://www.jeepforum.com/forum/f9/avenger-supercharger-4-0-a-240125/

PM "Reelm n Rubi" - hes running an Avenger w/ FTC-1:
http://www.jeepforum.com/forum/f9/supercharger-owners-please-help-369541/

PM "suicide" and learn from his issues - he removed his Avenger.
http://www.jeepforum.com/forum/f9/who-has-done-supercharger-their-tj-lj-341877/

There was another memeber (sorry, cant find the post at the moment) who REMOVED their Avenger after having it dyno tuned and found it running extremely lean. The dyno shop refused to run it again because they were afraid of blowing up the motor.

not trying to argue, just trying to help you not blow up someones engine.

**mudb8** · 05-09-2009, 09:21 PM

got a couple more things done today... It'll be running on monday.

got the charge air coolant lines plumbed in and the bilge pump in to circulate the coolant...

and made bracket from a stainless steel disc brake caliper slider off of something, to mount the MAP sensor to the engine instead of the fender per the instructions...

did a little grinding...

drilled holes and used the the original bolts off of the tb to bolt it on the bracket..

mounted to the engine, hooked up the wireing and the vacuum line to the manifold..

**rubidriver** · 05-09-2009, 11:10 PM

Looks good Dave. We want vid of the finished product.

**mudb8** · 05-11-2009, 10:40 PM

well, didn't get er done today... the official excuse is due to a f150 that came in on the hook with a bad slave cylinder so.... I spent close to 4 hours on that!

what I did do on the tj is got the radiator put in.. after pulling it 3 times to trim the fan shroud, the first time I had aready refilled it.. lol what a PITA..

I had the hoses routed along the body up out of the way of the steering shaft..

come to find out, they gotta go under the shroud, the overflow bottle wouldn't fit on the second trim, then I finally got it right... trimmed like so..
a little off the side and shaved the bottom at an angle..

so the hoses poke out under and to the side as high as possible..

then I got the vacuum hoses all hooked up, I moved the steel line that goes to the evap can and rebent it to fit up the back of the engine instead of putting a long hose on it..

getting all the air out of the charge air coolant system turned out to be fairly easy, I just pulled one of the bilge pump hose off enough for it to get rid of the air lock..

I was in the process of triming the tb when the ford came in... you can see the block that I ground off so it will mount on the charger intake flange

and at the end of the day I was trying to figure out the routing for the belt... I must be a moron or the belt is to short... cuz it wouldn't fit any which way I tried. the instructions are different from the new set up and also wouldn't work.

here's another teaser pic... lol'

**mudb8** · 05-13-2009, 10:36 PM

here's the rest...

I got side tracked by this yesterday, and took off and left the camera sitting on the tool box..

had to cut the spring perches, move the axle back one inch and reset the pinion angle...

back to the supercharger..

the belt was kinda a run-around... the one sent in the kit turned out to be to short, I spent a bunch of time trying different routing, then called jack at avenger, after two different faxes with routing diagrams, we got the right one... the belt was still to short to force it on without busting the idler pulley mount... I tried, I hate feeling like a moron, lol..
anyhow my first attempt was the right routing, the old style chargers have a different pulley (4") that gets swaped with the stock idler to gain clearance for the t-stat housing... jack @ avenger, promptly called back when he realized it was the wrong application for me and I already knew I didn't have a 4" pulley to swap, I was thinking WTF... our parts conter had called and ordered a few different belt sizes and a 4" idler, the idler was cancelled when we were told we didn't need it from avenger.

got er done with a longer belt and avenger's corrected routing diagram..

here's the belt # 1037.. the supplied belt was 1033 and apparently does fit some.. just wouldn't work for me. the 1037 was a struggle to get on and left the tensioner maxed out.

some routing if it helps anyone...

charger pulley... a note on the charger idler pulley is, I added a 3/16" spacer to space the idler out so it would line up with the other pulleys..

power steering pulley

alternator/tensioner...

on to the next problem... there was a vacuum leak causing a high idle and it didn't want to idle down after a quick blip of the throttle..

after probing around with propane, I found the leak at the throttle body mounting surface... Avenger say's a common problem is the o-ring seal that seals the charger to the manifold gets disturbed when bolting it on.. I had put on a small amount of assembly lube cuz I figured it could possibly roll while lining up the bolts..

fixed the leak with a new gasket and some more grinding. it was just enough to not allow a complete seal

that fixed the idle/rev problem

today... I hacked up the AEM cold air intake to fit the avenger supercharger..

ouch.. lol

and the final product..

I mounted a relay to run the bilge pump for the charge air cooler.. man, it works to.. the water was pretty hot in the coolant hoses, after hooking up the pump and putting power to it, it got almost cold just sitting there at an idle.

I took the wires inside to the spare fuse in the panel and soldered up the connection.

an oil change included royal purple, I'm not a big fan personally of 8 dollar a quart oil, It's not mine so no argument here. I was almost afraid to spill even a drop..
I then put in a trans temp gauge for the automatic using a simple "pod" mount.

the wires got fished up with a coat hanger and I mounted the pob on the pillar..

during the test run I made i stopped on the truck scale... and wow.. 4750 pounds this thing weighs in at with only me in the rig..

my initial impression of the performance is very good, (and yes I had a huge grin on my face the whole time I was driving it!) I was suprised and avenger say's it'll get better as the computer learns.. it pulls very hard and gets the rear loose as you're getting sucked into the seat set at 4.5psi max...

just a blip without the brake on in the shop, the hood was still up..

anyhow, that's all I got for now....

Jeepguy1977 · 05-13-2009, 10:47 PM

4750???? Good lord what's been done to that thing??

Cool thread to!

**mudb8** · 05-13-2009, 10:55 PM

Quote:

Originally Posted by Jeepguy1977

4750???? Good lord what's been done to that thing??

Cool thread to!

thanks..

I'm wodering the same thing... lol, still has the stock skids under it also.
the axles are upgraded and it has big 35" tires is all.. that scale was calibrated yesterday also. it's rare to see it closed.

I'm pretty sure my rubi is closer to 4350, I'll have to check it for the heck of it tomorrow...

**Unlimited04** · 05-13-2009, 11:04 PM

nice work, but i still think you need to measure the A/F ratio and see just how f'ed it is. You'll see it hit 16-17:1 lean right in the closed loop mid range used all the time - 2200-3500rpm, then it will go back to rich when it hits open loop. Avenger has been wrong for years about the computer programming on TJs, you need a SplitSecond FTC-1 to keep that engine healthy and alive long term.

In stock form, the computer has the A/F ratio all over the place for fuel economy, doesn't have knock sensors and doesn't use any kind of tune-on-the-fly. It takes a MAP reading when you start it, and doesn't take another until you hit WOT - you can find that in the FSM. Talk to RIPPMODS - they've even outlined how the stock computer will not adjust for a supercharger on their many threads.

Good Luck.

as for the weight, i think thats down into the noise range of the scale, it may not be accurate. scales calibrated to 60-80k lbs won't be accurate at 3000-5000lbs...just the way the load cells work.

**lumpster** · 05-13-2009, 11:13 PM

x2, i had the avenger SC on my 99 4.0 before i put the 5.3 in.

The A/F was scary, anywhere from 9.7-16, the shop i took it to wouldnt run it on the dyno a second time, they suggested a piggyback computer to compensate.

**Unlimited04** · 05-13-2009, 11:17 PM

Quote:

Originally Posted by lumpster

x2, i had the avenger SC on my 99 4.0 before i put the 5.3 in.

The A/F was scary, anywhere from 9.7-16, the shop i took it to wouldnt run it on the dyno a second time, they suggested a piggyback computer to compensate.

hey! lumpster's the guy I was talking about in the bottom of post #6