JeepLab Prodigy Install LIVE

[Yoinkers]

NOLA is your dyno chart coming? I'd like to see how it turns out compared to JG

[NOLAjeeper]

NOLA is your dyno chart coming? I'd like to see how it turns out compared to JG

Cant get the jeep in DYNO mode..Both of the shops i have taken the jeep to have not been able to dyno the jeep in 2wheel drive. It will not shift out of 1st gear when on the dyno in 2wheel drive. Southernhotrod, the shop that did my stage 2 install could not get any answers from Diablo or Prodigy on how to get the computer to get in dyno mode. If anyone knows how to get around this please let me know. 2012 jeep wrangler jku automatic.

[UselessPickles]

Can you provide any details about how that recovery tank is mounted there? I'm not thrilled with the low behind-the-bumper position that Prodigy intends for it.

[NOLAjeeper]

Pickles, I'll take pictures of the set up. I'll get them this evening.

[jeepsking]

Thanks Nola for pictures. Usually boost sensor comes after the throttle body. So it might be fitted on the intake beneath the engine cover.

[NOLAjeeper]

Thanks Nola for pictures. Usually boost sensor comes after the throttle body. So it might be fitted on the intake beneath the engine cover.

Ahh yes! I'll get some pics up of that as well this evening.

[NOLAjeeper]

Thanks Nola for pictures. Usually boost sensor comes after the throttle body. So it might be fitted on the intake beneath the engine cover.

This what your looking for? Looks like they used the T fitting method.

[jeepsking]

Yes it is. So adding T fitting gives inaccurate boost reading?

[UselessPickles]

jeepsking: An existing hard plastic vacuum line for the "purge control valve" is replaced with a vacuum hose with 2 "T" fittings. The wastegate and BOV sensing lines connect to the two T's on that vacuum line.



Given the above diagram, both the wastegate and BOV are connected to "C" using a vacuum line shared with each other and the purge control valve.


This is not the ideal setup.

Ideally, the BOV should have its own dedicated line connected directly to the intake manifold, rather than teed into an existing line. Having a dedicated line ensures the quickest possible response of the BOV.

The wastegate should ideally not be connected to a vacuum source. Even TiAL (manufacturer of the wastegate) specifically says to use a pre-throttle-body boost source. It should be connected to either "A" or "B" in the diagram. Here's a good read about wastegate boost source options: http://www.miataturbo.net/diy-turbo-...eed-ebc-47532/

Post #15 in that thread specifically talks about why the wastegate should NOT be connected to the intake manifold (position "C" in the diagram).

I have asked Prodigy about this, and they say they have zero issues with their setup. Also, they say they tested the wastegate boost source both before (position "B" ) and after (position "C") the throttle body and found no difference. They chose position "C" and shared vacuum lines for ease of installation.


I'm not too concerned about the BOV having its own dedicated vacuum line. If the BOV responds quickly with a shared line, then it's fine.

I'm more concerned about the potential part throttle issues with the wastegate being connected to position "C" (see post #15 in the linked thread above).

Connecting the wastegate to the intake manifold seems to be a controversial subject on the internet. Many people on forums say they have run that way for years with no problems. Other people report part-throttle drivability issues and part-throttle high load compressor surge (like when driving up a long hill). Some people say the intake manifold source will give you quicker spooling and faster throttle response. I'm sure the exact outcome depends on many factors and the entire turbo/engine system as a whole. I've read many threads on the topic and talked to both TiAL and Prodigy directly. Based on all of that, I have concluded for myself that there's no good reason to disregard TiAL's instructions to specifically use a pre-throttle-body boost-only (no vacuum) source to control the wastegate.

For this reason, I decided to order one of these that I will use to add a boost source to the silicone coupler/elbow that connects to the throttle body (position "B" in the diagram):

http://www.atpturbo.com/mm5/merchant...egory_Code=BCS



It's a very simple/inexpensive modification to make me happy that I've done it the "right way". I will probably try both the Prodigy setup and my modified setup to see if I notice any differences.

[jeepsking]

Thanks Jeff for these info's. What about the boost sensor pick up point to the gauge. As far as I know it should be in position "C".