Joe
I had the UMW hybrids on my stage IV which I bought from IA.
Robert

 

I see ........didn't realize that was common practice......always thought of stage 3/4's as running k24's.

 

Stage 4 program and UMW made turbos. Yeah was a weird set up I thought also but it was an option(less lag etc.). I seem to not be alone in this combination. Unfortunately not a wise decision I realized afterwards. and the car secondly was too slow lol. And my statement clearly shows that I was referring to the giac programming with these hybrid turbos and not the stage 4 package from EVOMS. I hope anyone that wants to go stage 4 to stick with the stock k24's because they are designed for them. This thread has sparked interest in running hybrid turbos with tunes not designed for them, hence my input.


S

 

Even kevin at UMW did not recommend this mix. Heck, 3 years ago I had K24s with FVD ecy stage 4 and he convinced me to get his stage 5s ZC with proper ECU.

 

Guys.. I am all mixed up when you speak Stage 1-2-3-4-5-6-7-etc.... Can someone resume as if using the k16/k24 hybrids with giac X50 program (k24 pump mode) will make the engine run leans ?

Thanks

 

Different tuners offers different stages. FVD, EVOMS etc.....

 

x50 tuning is not meant for k16/24's. Its only meant for K24 straight turbos. I do not suggest hybrids with this program regardless of the tuner. If you want hybrids get a custom tune. IMO

S

 

To continue with the blanket statements =) ....

Most stage 3/4 cars do run on the lean side because they are more or less out of injector at that point. Every k16/24 hybrid or k24 car I have logged has been near or above 100% duty cycle on the stock injectors... Even a 5 bars doesn't do enough on some cars.

Now "lean" is relative, I would like to see these cars running in the low 12's a/f near redline. This is not possible on most set ups, because there is just no resolution left in the injector.

 

Thanks for all the input. And, I think that the bottom line is, anything other than just upgrading to K24's, I need to do a custom tune, and my GIAC is out the window.

If I am correct with that, I am much clearer now. Just have to decide if 24's are good enough, or if I need to step it up to run with the big dogs!

 

I bought John D's old set up (k16hybrids w/FVD stage 4)
I added:
Ported stock headers
GT 2 IC's
Evo v flow
Forge diverters.
Fabspeed GEN 3
Suman; do think I need a 5 bar? Let's ask George to put on Dyno and see what AFR are?

Car feels really strong and smooth.

Elliot

 

Elliot def have George check out the AFRs on the dyno. Its crucial to make sure your not running lean at the top of the rev band. I would hate to see something happen even though Im sure your set up is fine. Doesn't hurt to pay 100 bucks for a few pulls to save you thousands in the long run.....

 

Actually Kevin was the one that said this combo worked well

Jag

 

Proto tunning and k24/18 this is what Buddy thinks

What I thought we would do is Tim on high boost and me on low boost at 1.3 bar which is a typical GT700.

Then all out for both. I think he will be very close on my low boost and I should pull him on my high boost.

Any way you cut it his $10,000.00 system is hanging pretty well with my $45,000.00 system!

 

Well, I had his stage 5s and they were something close to I think the current stage 2s.,... he didnt feel comfortable selling me his turbos without the GIAC tuned ecu.

 

I picked up Adam's Speed Gallery's k16/k24 ZC turbos and will get them install shortly by Speed Gallery. Right now I'm running stock k16s on a stage 2 GIAC flash. Sounds like I'll have to get a custom tune as well? I also have an exhaust, evo intake, diverters, GT2 intercoolers, and ported OEM headers.