406TPI

iTrader: (1)

Just finished up my Maggie install. Motor is a bone stock 99 LS1 crate motor, 6 speed trans and a ford 9" with 4:10 gears through a full GMMG exhaust. I was pretty happy with the results. 440hp/441tq Check out the torque curve...err line...lol. The tuner suggested I switch to some LS6 valve springs due to the valve float you see at the end of the graph. Motor never ran out of fuel. With all the down low torque that the blower gives I'm definatley going to have to change gear ratios though.

Dyno Video
http://www.youtube.com/watch?v=GSiGzpxuKgM

bad86z28

iTrader: (1)

Awesome results! Those 4:10s and the magnacharger gotta be pretty rough on the rear tires. You could probably take off from a dead stop in 4th gear lol.

camaro1185

Awesome numbers!

SiCkRs

iTrader: (6)

Wow sounds great and good numbers too

1nasty86

iTrader: (5)

Nice! I want a whipple for mine. What iat's are you seeing fully warmed up?

406TPI

iTrader: (1)

Wipples are nice units for sure, just a bit more pricey than I wanted to spend. IAT temp varies. Going down the road they sit around 100-110 so far. Letting it sit at idle in the garage with the fan on they will creep up to 125ish. Under full boost they will hit 150-160ish. At 160 it will start to pull timing. These numbers are completely normal according to the guy that tuned it, and he has quite a bit of experience with these blowers. Keep in mind..the IAT sensor on these systems are mounted before the intercooler.

Orr89RocZ

iTrader: (20)

Looks good! I love maggies....and whipples

Any chance you can move the IAT after the cooler to limit timing being pulled? I guess not on a blower like that. Makes no sense to have it before the cooler since its the air after the cooler that matters.

86White_T/A305

howmuch boost is she putting down? thats a nice street setup im willing to invest in lol

406TPI

iTrader: (1)

I thought the same thing to...why not mount it after the cooler?? But in the end...it doesn't really matter where it's at, before or after. You just end up with a shift in reference points as it related to IAT. The only reason to mount it after the cooler is if you wanted to compare these IAT's to another motor that is N/A or a conventional intercooled boosted application. See what I'm saying?

alan91z28

those are nice results... that low end torque will be real nice

what size maggie do you have on yours?

also curious on what you did for the intercooler... i had a custom one made for mine by griffin that i mounted in front of the rad where the ac condenser use to go... my car is in paint so i haven't yet been able to get it tuned and dyno'd yet to see how much it hopped up my LS3 type motor

cam-

Nice! Sounds great indeed. Dont bother with the LS6 valve springs though IMO you can never have too much spring only not enough Id go with the PAC1518 beehives and might as well throw the LS6 cam in there while your at it theres another 30-50 ponies waiting for you for cheap lol

Upgrade the pushrods while your at it

Orr89RocZ

iTrader: (20)

Well its just that you want to use the air thats going to the intake valves for your reference. That way you dont pull timing unecessarily. Precooler temps can be 200 deg but if after cooler temps are only 140 then you dont have to pull timing just yet. That could be 10-20hp per degree pulled on a boosted application.

Not that you need anymore power than that anyway Thats pretty stout.

Confuzed1

iTrader: (4)

Nice!! I wish I had taken at least a quick IPHONE film when I had mine on the dyno. Gotta love that screaming sound the blower makes at WOT.

The torque they lay down is awesome and a curse at the same time. Getting any decent traction is a major challenge (at least for me). And I'm running 3.70:1 gear ratio in the rear. I don't bother laying into it hard until I'm in third gear. I think I would have gotten better HP numbers with an LS1 due to that engines ability to breathe on top, but I got outrageous torque on the Mustang dyno. Change your gearing and it should be a rocket 0-60.

406TPI

iTrader: (1)

I don't have a gauge on it yet but I'm guessing it's 7-8psi based on power output.

I just have the MP112. I bought the GTO kit. Do you mean heat exchanger? The intercooler is sealed in the manifold. For the heat exchanger I used the GTO unit. I had to make a slight modification to make it all fit in the core but that's because I am still running an A/C system. Without the a/c it would fit fine without mods.

I would think the temp drop across the intercooler would be fairly consistant no?

Orr89RocZ

iTrader: (20)

Since its water to air the drop is consistant, as long as the water temp is controlled and remains consistant and the blower remains at a set operating temp. Its just that the air temps will vary greatly with a roots/screw type setup depending on blower heatsoak and water temps. If you did your first dyno pull cold, and then 5 pulls later on hot blower, you should see less power due to heat soak. Cobra stangs see it all the time.

Just saying it makes sense to me to have IAT's taken after cooler if possible and control timing modifications from there. Doing it the other way is much more conservative which is ok on stock bottom end type setups.

I would love a maggie setup tho. I want a GTO as my daily driver and then get the maggie setup with a mild blower cam. I love the sound they make but they are just too expensive. i can make a twin turbo kit for that price

406TPI

iTrader: (1)

I see what your saying. I do have a little data with regards to the heat soak issue. The car made 434hp with it heat soaked. The car sat for over an hour with fans blowing on it and another pull was made and it picked up 6hp. Unfortunatley I don't know what the difference was in IAT or coolant temp but I was kinda suprised it didn't pick up more.

I'll tell you what, that sound is very addicting....It almost make it feel like some sort of crazy windup toy.

406TPI

iTrader: (1)

Engine bay shot. The only thing I have changed since that pic was taken was to switch from running a PCV system to running dual breathers. As far as hood clearence is concerned I just had to trim out one small area from the bracing...other than that it fits great. Plenty of room around the back of the blower too.

cam-

purty

TPI TERR

iTrader: (9)

Engine bay looks perfect !!able to mount the cf frc that you had ? Or will you have to mod them

White'89

iTrader: (8)

Time for a cam swap and ditch that MAF. But we should stop trying to spend your money for you especially after what the maggie cost...She looks sick job well done sir.

Orr89RocZ

iTrader: (20)

Thats not all that bad to be honest..i would have expected 10-15hp overall lost when hot compared to cold. Either way its a good bit of power

406TPI

iTrader: (1)

Thanks....I can't fit FRC's on at the moment because I had to piggyback the #8 coil onto the #6 coil due to the stupid A/C box. I'm either going to switch to the truck coils or make custom coil mounts. To be honest, I hate the way it looks now without covers on it.

Yeah, I figure this will do me good power wise for a couple years....then I'll put in a blower cam and definately ditch the MAF. The tuner said I am right at the upper limit of the MAF right now. Could see 500rwhp with the cam and a touch more boost

firechicken76

iTrader: (3)

i know this is an old post, but do you still have this car? im doing almost the exact same thing to my 88 gta. it currently has an LPE gt2-3 cam (forced induction cam), long tubes, 25% UD pulley. i think im making about 375 rwhp right now. I bought a radix mp112 maggie, it came stock with a 3.4" pulley, i upgraded to a 2.9" pulley, upgraded the 78mm tb to a 90mm tb, upgraded injectors to 60#'s, bought a racetronix fuel pump, and a crank pinning kit. Im thinking about running meth, but not sure yet. im shooting for 525ish, boost should be around 8psi.

what size tb are you using? any video? any track times? did it add much weight to the car?any more pictures? hope you can help, i need some motivation to get this done. im following speartechs 91 z28 build.

406TPI

iTrader: (1)

Yes I still have the car...lol I'm using a 3.0" front pulley with 1:1 rears. I'm running a NW 92TB. Keep in mind boost is a measure of backpressure. So every engine combo will be different. If I had to guess, mine is running about 7psi..but it doesn't matter. As long as the tune is on, it is what it is...know what I mean?

Good luck with your project. Run the biggest TB you can afford, PD blowers love big openings..lol.

camaro1185

Can you explane to me your ac system? From the looks of it, you are running the third gen system hooked to the 4th gen compressor.

Do you have a tubular k member or did you clearance the stock one?

Thanks!

406TPI

iTrader: (1)

You are correct on the system...I am using the factory K-member notched to clear the compressor.

firechicken76

iTrader: (3)

is the 3.0 pulley he stock one? or did you upgrade?

406TPI

iTrader: (1)

I believe a 2.9 or 2.8 is stock, but that is with an underdriven rear set. I upgraded to a 1:1 rear so I could run a bigger pulley up front to avoid any belt slippage issues.

firechicken76

iTrader: (3)

the radix that i have uses a 3.4", but it only has the one pulley on the front, and the jtube that connects to the tb comes from the back. i bought a 2.9" pulley.

have you checked out speartechs 91 z28 with the radix magnacharger? speartech.com

they were running a 2.76" pulley though, which i may switch to eventually.
Ive got longtube headers and the gt2-3 cam also. Im really hoping for over 500 to the tires.

are you running cats? headers?

have you run yours at the track?

have you weighed your car?

406TPI

iTrader: (1)

No cats, just long tube headers. No runs at the track yet. Not big into 1/4 mile runs. I might make it to the track once this summer...maybe.

Last time I weighed it it was 3340 before the supercharger, 9 inch rear and new a/c system...lol It's probably a pig now. I know the s/c alone was over 80lbs.

firechicken76

iTrader: (3)

I weighed mine a year or so ago and got 3050, no ac, no cats, no air pump, no back seats, light gta wheels, 9", t56, tubular lower control arms.

I ran it at the track last year and got a 12.4@115 I think i could of gotten a high 11 with a better launch (2.0 60' ) I cant wait to see what happens with the maggie on there.

total engine mods can be found on my fquick page.

i just ordered some more parts today, i still need a boost gauge, wideband gauge, bigger maf for the 90mm tb, and some other odds and ends.