Well as promised I went to HP Logic today for my tune with my new impeller. This was done on a Mustang Dyno. I think Dynojet reads around 20% higher give or take. My previous dyno was done during a cooler time of year. Today was HOT to say the least. I must say the car pulls alot more than before.

List of mods are
Vortech SC with V+ impeller 2.87 pulley
RC 550cc
Walbro pump
Megan headers
Test pipes
Borla TD with X pipe muffler
Motordyne spacer
ACT clutch
Fidanza Flywheel

Mustand Dyno numbers before impeller 332whp 273Tq. After impeller 375whp 319Tq

Add 20% to that for dynojet and it would be 450whp 384Tq. I will be getting a dynojet run in the near future to confirm that.



I would like to thank Carl and the 928 Motorsport crew for the great customer service and kick *** impeller.
Also Thanks to Jack Cecil at HP Logic for the great tune.

 

Nice! Was your only change the impeller?

 

That's it nothing else.

 

good gains between the swap esp if you mean that HPL did not adjust the tune in any fashion. If they played with the tune, actual gains get alot more cloudy.

your baseline is crazy low though, like 3.12 pulley #'s, even for a mustang.


It would be great to see that on a DJ!

 

Well the baseline run made 378whp, but it was leaning out @ 12.5 A/F up top. They just added more fuel and got my A/F back down to 11.8.

The last time I was on a DJ I made 400whp on a 3.12 tune with a 2.87 pulley.

 

It's funny to see, an impeller give so many horses lol

congrats on the uprage

 

Awesome, what engine management do you use?

 

awsome

as i struggle with issues on my car right now i stare at my vortech on the shop floor. It was a good little vortech.

 

Nice gains for a impeller and tune. Your 20% DJ assumption is a bit off. The difference is 10-13% between there mustang dyno and a DJ.

 

Jeff, what happened?

is the Vortech out?

 

Utec.
I'm just basing that number on what I've heard and my personal experience. I made 400whp on a DJ and one week later made 330 on a Mustang dyno. I really don't care about the overall number though. I care more about the gains made on the impeller change.

 

Nice...when you upgrade to a built block you can go for bigger numbers with a smaller pulley, spin that sucker to 60k rpm

 

turbo being installed. would have been done but i ran into a few of my usual issues. doubt i'll make the dyno next weekend

 

Can I assume you have some kinda of fuel return system?

 

No not yet. I will be investing in one soon enough. I need to address my suspension and brakes next. Probably BC coilovers and an Akebono caliper kit.

 

How can you not be maxing out the fuel injectors when I have pretty much the same size with less power and they are at 100% DC? You don't even have the vortech FMU?

 

talk to charles from CJM. great to work with and his stage 0 kit is like 400$ now. Super cheap and high quality stuff well worth the cash.



some injectors flow more than others even if they are the same model. also, every engine is different. some less efficient than others. it also depends on atomospheric conditions (air density, humidity, etc). That'll play a huge roll. Lastly, not all duty cycle is calculated properly. I've had mine tell me i was at 110% duty cycle before. How is that possible? incorrect math on the computers part. You'll know if they're maxed, you go super lean and no amount of adjustments change that. If you can bump up yoru fuel in the tune and the car will go more rich then the injectors aren't truthly maxed.

 

I have the CJM stage 0, and it can definitely handle over 500 whp with the Vortech....

 

When I installed my 2.87 pulley my A/F ratio would climb as boost climbed no matter what I did. I ended up with the 3.12 again but even with the 3.12 it goes to 90+ and even touches 100% every once in a while.

Anyways...no more off topic. I want one of those impellers...lol.

 

Wow was nice to see such a big gain , Just bought this for my G, 412 WHP before. With this and pulleys trying to get to 500WHP.