Prodigy Performance 3.6 Turbo DIY Install

[UselessPickles]

i have an issues regarding the initial pick up. ie: full throttle at low rpm below 2000 will easily lend to a cut off in power theb gradually it starts boosting.

A few possibilities I can think of:

1) You don't have the latest tune improvements that Jessee and I have been testing. We received the updates as custom tunes. I don't know if the improvements have been pushed out to the official Prodigy tune on Diablosport's servers yet. The latest tune has big improvements in the lower RPM area.

2) I have found that the turbo does not respond well to sudden full throttle, especially at low rpms. The engine seems to bog down a bit with sudden full throttle. From low rpms, instead of stomping on the throttle, try a smooth transition to full throttle. You can still quickly transition to full throttle, but just don't suddenly stomp on it. At higher rpms (4000+), it will respond more quickly to sudden full throttle, but smooth throttle transitions will always give you the best results because it allows for the turbo to keep up with your demands. I believe this is just a normal characteristic of a relatively large turbo. It doesn't bother me, because I prefer smooth acceleration transitions anyway (your drivetrain probably prefers acceleration transitions as well).

3) The turbo can't really produce a lot of boost until somewhere above 2500 rpm. 1st gear accelerates quite well below 2500 rpm, but if you are in a higher gear, then you'll always get the best results from downshifting to get rpms above 2500 rpm if you really want to accelerate. That's one way the automatic transmission would be better. If you use a lot of throttle with the auto transmission, it will downshift. The manual transmission gives us the opportunity to be lazy and wish we could just accelerate quickly from lower rpms

Even once it reaches 4500 i can feel a power loss at 3rd gear

I think I need a more detailed explanation of this to understand it. Are you talking about driving steadily in 3rd gear at 4500 rpm, then stomping on the throttle? If so, then there will be an initial lack of power as the turbo spools up. This is boost lag.

My boost is reading 8.1 psi.

Now we've got 3 people making about 8.0-8.2 psi boost. Jessee increasingly appears to be the outlier with 9 psi boost! This really makes me want to crank the boost up to 9 psi with a manual boost controller to experience some extra fun

[jeepsking]

A few possibilities I can think of:

1) You don't have the latest tune improvements that Jessee and I have been testing. We received the updates as custom tunes. I don't know if the improvements have been pushed out to the official Prodigy tune on Diablosport's servers yet. The latest tune has big improvements in the lower RPM area.

I made my data log and ill send it to PD for the custom tune. My only concern for low RPM because i do extreme dune bashing with almost 15 jeepers in the desert. We climp high dunes. We sometimes race down to top as you posted couple pages back. This requires initial pick up (i am not talking about turbo spool but the vehicle tends to cut till it reach 2300 then it respond then the turbo spool.

Regarding 3rd gear. Once i put full throttle while in seconds and shift to 3rd till it reach 4500 here where i feel the loos of power then it come back at 5800 ( the turbo sound different at that stage).

This Friday i am going to the dunes to try it. Might shoot a video

[UselessPickles]

We climp high dunes. We sometimes race down to top as you posted couple pages back. This requires initial pick up (i am not talking about turbo spool but the vehicle tends to cut till it reach 2300 then it respond then the turbo spool.

I confirmed with Prodigy that the new improvements to the tune are not yet available on Diablosport's server. Most of your issues should disappear once you can get the updated tune.

Also, in deep sand, it's quite fun and relatively safe to rev the engine up and dump the clutch. Tires will initially lose traction for a nice 4WD "burnout", but as they dig down into the sand, they have more surface area contact with the sand and gain traction quickly for a nice launch that doesn't shock the drivetrain as if you did the same on dry pavement.

Regarding 3rd gear. Once i put full throttle while in seconds and shift to 3rd till it reach 4500 here where i feel the loos of power then it come back at 5800 ( the turbo sound different at that stage).

I don't think I've experienced anything like this. I'd wait to see if this issue goes away with the updated tune before worrying about it.

This Friday i am going to the dunes to try it. Might shoot a video

Yes! I still have not heard what my turbo and BOV sound like from outside the jeep as it drives by.