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Aerocharger Stage III Dyno

8.9K views 99 replies 38 participants last post by  SVTRSST  
#1 ·
Well, you guys wanted some independant aerocharger results. Here you are then.
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I went and had mine run on a Mustang 250 dynomometer. A Mustang chassis dyno is load based as opposed to a Dynojet which is inertia based. For a good discussion of the two please read this document from the Rennsport (Porsche) mailing list, where some of the Porsche engineers discuss the particularities of various dyno systems. Anyhow, the most important part is that Mustang chassis dynos read about 5-7% lower then a dynojet unit. Also Mustang dynos do not show no gains from things like lightweight flywheels and underdrive pulleys.

So then consider this graph:



Clicking on it will take you to a slightly larger version. As you can see my car put out 201.7whp@5500rpm and 202.4wtq@4000rpm. On a dynojet with the UDP and flywheel showing up these would probably be close to 220. Pretty solid numbers.
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Those of you familiar with the aerocharger kits will notice that my torque figures are low for a stage III. I belive this is because I am only making 8psi in 4th gear for some reason. This is odd to me because I am 100% certain I am getting 10psi in 3rd and 2nd. As soon as I am done posting here I am going to go take a drive and check out 4th. This could be because my turbo has a slightly different spring/shim on it to compensate for the slight additional backpressure from the 2.25" exhaust.

Mods for this dyno are:

Aerocharger Turbo 10psi@2750, 8psi@6000
Iceman Cold Air Intake Front Section Only With Stock Airbox/Filter
MBRP 2.25" Exhaust
FocusSport 4-1 race header
Esslinger Cam Gears (0/0)
Esslinger Underdrive Pulley
FocusSport 9lb Flywheel
Clutchmasters Stage III Clutch
Quaife Automatic Torque Biasing Differential

I have some other comments regarding the Quaife+dyno and why there is no A/F graph
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however ill add those in later.

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Black 00' ZX3 5spd
Mods
"No Fear?..... Not Fast Enough!"
 
#2 ·
Great number Chris. I am so wanting to get my car to the dyno. I am running solid 10lbs of boost midrange. I also have a 2.25" exhaust (Thermal). I can't wait to see my numbers. I think a day at the track is next. I think those numbers are good for low 14's to high 13's. Keep us posted.

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TEAM FOCALJET:MID-ATLANTIC
Malibue Blue ZX3
Eibach Springs and Sway Bars. Blue FS Stress Bar AEM intake & UD Pulley. B&M Shifter, Focus Sport wires and Autolite plugs. Power Stop drilled rotors and EBC pads. RS Spoiler. Borbet type T wheels w/ 215/45/17 Kuhmos. Thermal exhaust. Painted lowers and sides. Aerocharger Stage 3
 
#4 ·
Congratulations!!!!

Looks superb!
WOW!! etc. etc. ad naus.

Beautiful linear form, it must drive like a dream. It's quite something to hope the focus has the potential to be a real sports car, then see it can be done, and the be wickedly jealous of those who have had this much success!!

Congrats again!
 
#6 ·
man just makes me want my tax return im gonna get next year even more lol.might break down and put money on a card.cant wait for my stage 2 . how come it took it so long to get to max hp? i thought since you hit max boost so low in the rpm band you would be making more power much faster then that.

[This message has been edited by whitezx3 (edited 10-01-2001).]
 
#7 ·
Jim,

You better get those machines running in overtime. I have a feeling that this my pick your business up a notch.
 
#8 ·
Wow...damn.....cool....all of the above...!!

maybe there is more to be found....but right now I don't care....there is simply no way to argue with the Aerocharged Zetec torque....that old "elephant's back" term to describe a torque curve has never been so appropriate.........

have fun Chris and.....congratulations.....
 
#10 ·
DAMN!!!!!!!!!! That is awesome, and people say turbo numbers arent as smooth to redline, look at that, compare it to the JRSC and if you still prefer the JRSC, you have something wrong upstairs. Holly molly. Thats about 220whp on a regular dynojet. DAMN, that is damn impressive, i so want that turbo its not even funny
 
#11 ·
yo chris--
not only did you whup me bad in 5th gear roll-on, you beat me to 200 dyno hp as well. what a pal. that could have been 215-220 on a dynojet, with only 8 psi peak boost.
on the dyno your 4th gear boost was low probably because of a hot intercooler, due to fan cooling less than optimum. you get 10 psi midrange on the street, but on the dyno only 8 psi midrange, similar to my previous dynojet runs.
congratulations.
 
#12 ·
ROCK ON!!! *Thunderclap*
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Can't wait to get mine hooked up and dynoed! 201.7 hp on a Mustang dyno!!!

I just installed the Borla 2.5" exhaust and the difference in power is like night and day (and remember how giddy I was before). I didn't think the exhaust would make that much of a difference, but it does! Oddly my boost gauge is reading over 8PSI now though (as opposed to 7 quick peak and 6PSI usual)... thought it was only supposed to go to 8PSI until its modded (as specified in the Kit installation manual). I try not to rev too high, but I accidentally hit about 5300rpm and it felt like running into the speed gov. So I'm exercising some caution until the 5th injector comes.

All I can recommend is to go with THE biggest exhaust you can find. If Bosal is really making a 2.75" or 3" exhaust, I'd give it a try. I figured the Borla was going to be really loud too, but its like a mouse! Barely louder than stock, with the only real difference being some low resonance around 2K rpm. I'm so glad because I was fearing fart like rice-rocket sound... but the turbo REALLY cuts down on the exhaust note and smoothes it out compared to clips I have on MP3 (which are also not bad).

That is weird that you boast such awesome hp (2hp over our ceiling but is probably fine), but lower torque than Jim. We'll have to see if its any different on the Borla. I'll basically have a Stage IV with UDP as the only mod which will be a great example of what a stocker would achieve with just the bolt-on kit. I will be on a DynoJet dynamometer though, so the results may be a little higher. I have the stock+UDP done just last week for comparison though so we can see a almost perfect back2back.
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Talk about a breakthru... this looks to be the easy bolt on and pretty damn affordable setup. Although I refuse to put those cheesy Aerocharger stickers on my car, I think I'm going to have to recommend the kit to everyone I know. *ear to ear grin* I really liked the Focus before, but now I love it. Maybe I can install some knight rider deal so it can talk dirty to me. Hmm... Focina:“Yeah baby, throttle me! I like it hard! Hug the corners... Oooh!”
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Ever notice how 'turbo' is synonymous with 'fast' or 'powerful'?
*while watching TurboCooker infomercial on TV*
Engine Forum Moderator -Chris-
 
#16 ·
way kool #s hope to get mine there one day went to the web site about the 2 dynos but didnt work but with owning a dynojet iv hurd it all before this is my theory if we have to load the rear wheels more than the car ways to get these TQ numbers does this mean we have to add wait to the car to get these TQ numbers in real world. mustang dyno is based on TQ dyno jet in based on HP. it is inertia wait based on about 2800lbs it does load the real wheels with this weight they are loaded. but this argument will go on for ever
 
#17 ·
has anyone posted dynos of a stage 2 ? i have searched but couldnt find them. also if he had more air to his intercooler that would raise the tourque? would it also raise hp and would it affectat what rpm he reached peak at with each? sorry if that is a lame question
 
#18 ·
Jim, any recommendations to ensure adequate real world representation of the results? Should I make a request for extra fans, bring some bags of ice, mist some water onto the fans? Obviously it can't radiate heat properly with the equivalent of 10mph wind flowing through it at full throttle.

Guess the injector will be here tomorrow morning... man I can't wait!
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#19 ·
duc--
it's especially difficult since you're running a cat, you need HOT cat and COOL intercooler to mimick the real world. all you can do is find a dyno with killer airflow for intercooler; my SF901 and CycleDyne use an 80 mph monster blower for just that reason. someday soon we'll have our own roller car dyno, gaurantee I'll have a 20 HP fan for cooling.
when you dyno, note RPM where peak boost occurs. Probably 3rd gear is best, start run at 1500 rpm.
 
#23 ·
hey duc go to home depot we sell a huge industrial fan. it either chain or belt driven i forget. you could probably hook that thing up plus what ever fan they run for their dyno and return it after your done. no joke this is a huge freakin fan = to like 12 hp if i remember right . probably sounds retarded but might work if not then dont laugh to hard at me
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[This message has been edited by whitezx3 (edited 10-01-2001).]
 
#24 ·
I don't know... I really like the service and availability of Home Depot. Wouldn't want to use them like that.
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Plus it would be hard to GET that big of a fan there.

This is the plan... I'll call WAY ahead to make plans for the biggest fans they have available are ready. Then I'll call shortly ahead and let them know when I'm on my way so that the cat will be "warm".

I do notice a huge difference in performance when driving the car for the 1st mile or two. Then HELLO boost!
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So I see the inherant problems with getting an accurate dyno.