Plus the affect on redline and rev-ability (which often suffer with a longer stroke).

 

I'm sorry if what I've written is ambiguous or unclear but if you read again, you will see that Stage I consists of the following:

Cargraphic Manifolds (Sport or Race) Cargraphic "Cup" Mufflers
IPD Plenum & 82mm TB
Upgraded Filters
ECU flash with or without custom dyno tune

If you go on our web site you will see that if you add up the costs for those parts AND INCLUDE LABOR of roughly 4 hours for exhaust, 5 hours for intake, 1 hour for tuning, the sum of those items comes in just over $10K and im discounting the rest to stay at a price of $10K.

The DeMan and BGB pricing is supposed to be the same and differences will only be as a result of a bundled kit of add-ons that maybe I am or am not including. I will confirm with Rick so it's the same in both camps.

As it sits right now, the RPM limit on the stroker will NOT exceed the factory cut of 7800 RPM for obvious reasons. Without the Power Kit, there's no reason to rev a GT4 over 7500 RPM as the power falls off substantially and can only be achieved with the X51 heads and manifold at those higher RPM levels.

I'm on a plane right now traveling to Atlanta following the Easter holiday.

If you have more questions, email me directly or call the shop please.

I apologize again if the descriptions are ambiguous; I thought I was helping, but I could have made it more convoluted in the process.

Thank you.

 

nuking the factory warranty - priceless

 

Plus the stage 1 price, plus the stage 2 price..

 

I have been traveling and busy so I have been away from RL.....I still haven't been able to get the videos of a stock GT4 and my GT4 with sport headers and cup exhaust on the dyno so people can compare. They shoot the videos but the guy still hasn't send them. Will also follow up with the dyno chart.

 

I have some preliminary results from some work being done on my car, and my summary is that doing the plenum/TB and tune is probably not worth it right now. There are a couple issues (CEL and throttle hanging/unintended engine acceleration) that result that only seem to be addressed by the original German Tuner BGB was working with - now I'm starting to understand what MRD-SPY was belly aching about. I'm hoping our favorite tuner can fix the issues, but as of now anyone putting a 82mm TB on a GT4 is going to face the issue, tuned or not. I'm sort of poking at the system by posting this, hoping that between IPD, the vendor community, and our favorite tuner, the motivation can be found to solve it. it's odd that I'm the first to experience the issue....

 

I've heard of this issue also from my shop two weeks ago. They are confident that the issue will be resolved but have suggested I hold off doing any engine mods until that time.

 

I'm sure it will be addressed soon.

 

Well that's troubling. Tough to swallow a 4K tune😬

 

Thank you for honesty and taking one for the team
I am really sorry its not working out, but I suspect it will be resolved
Too many great minds working on this for it to fail ... ( hoping )
Regards
Ed

 

Here is an example on track - FF to 0:56 - going into T11. Look at my throttle input, then look at RPM - the clutch is disengaged....and RPM just holds there with no throttle input. Then FF to 1:25...similar thing - no throttle input, RPMs climb/hold steady. I've talked to a friend who also has a 82mm TB setup, and we got it to do the same thing sitting in his garage...so this is real.

 

I don't understand how this just came up... I thought that plenum and tb conversions had been done for a long while and were a proven and minimally invasive mod.

 

That is crazy !!
Sadly, I guess they still haven't unlocked the DME code ( Porsche engineers must be laughing ) You would think this would be a slam dunk, as this is the same package as Porsche's 911 S X51 set up...? No?
EDIT
OH WAIT You dont have the heads and cams that come with that package???
I wonder if the DME can be gotten from that car and work ??
I thought Rick DeMan had this on the 4.0 they did and it was running well
Strange to say the least
That throttle hanging up like that is very unnerving, if you ask me

 

Well, according to Rick's video, before COBB they could never really fully get the tune completely right, but I didn't think this would happen???

 

But haven't people been doing the plenum mod without a tune forever?? Waiting for fabspeed to chime in to see how their mods are working out

This makes no sense though.. This has to be a mechanical issue, like a defective throttle body.. Nothing to do with DMS or electronics..