IPD Plenum results at drag strip...
10-11-2018, 10:56 AM
#16
Rennlist Member
He moved to the middle east because some very, very rich guys decided to pay him huge amounts of money to tune and support their fastest GTRs in the world. Turns out that even if your stuff sets a bunch of records, if you go from a paying vendor back to an unpaid account, they wipe the forums clean. The almighty dollar at work. Just one of the reasons why FB groups are eating dedicated forum websites for lunch these days.
09-20-2019, 12:09 PM
#18
Bumping an old thread, but anyone seen any benefits to installing IPD plenum and Ypipe? I am considering buying these, and want to be sure its worth the money for a low 700 whp stock motor car.
09-20-2019, 01:32 PM
#19
Burning Brakes
I’ve yet to see true, conclusive evidence the IPD plenum and GT3 TB do anything on cars with VTGs and <750 whp. Back when Rob was tuning all the >700 whp upgraded VTG cars, the turbos themselves are the flow limiting step and the intake mods I referenced above made zero difference in power over those running the factory parts.
A418t81 is correct. And once you get above 750WHP you start to have side intake runner restrictions AND cylinder head restrictions. That's why you see guy bolting on the large aluminum GT3 intake.
Do your research>>grab the factory side plenum and have it flowed thru the stock cylinder head>>see what the flow numbers are..
The stock "center plenum" and factory turbo throttle body is good for 1.6 bar>>your rods will become the fuse link at that point..
A quick and dirty check of facts is to see what you engine load numbers are clocked against a timed speed run.. If you run the same time>you start asking yourself if it was worth it??? Is it worth a half a second quicker?
Do your research>>grab the factory side plenum and have it flowed thru the stock cylinder head>>see what the flow numbers are..
The stock "center plenum" and factory turbo throttle body is good for 1.6 bar>>your rods will become the fuse link at that point..
A quick and dirty check of facts is to see what you engine load numbers are clocked against a timed speed run.. If you run the same time>you start asking yourself if it was worth it??? Is it worth a half a second quicker?
09-20-2019, 02:48 PM
#20
Ok, sounds like the general consensus that this is not an upgrade from the OEM part. Any thoughts on the Ypipe?
09-20-2019, 03:15 PM
#21
I have it on my car.....slapped it on at same time as every other upgrade on car....so I cant opine to IPD specific gains. The y pipe I kept stock as I heard the IPD one makes more sense on very high HP vehicles, plus I would imagine the larger cross section would create a bit more lag for street driving.
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Big Swole (09-20-2019)
09-20-2019, 04:53 PM
#23
09-20-2019, 08:29 PM
#24
Burning Brakes
09-20-2019, 10:40 PM
#25
Just got car back from a few upgrades, running 68mm VTG with e85, etc. Going back to clean up a few things and do inlet pipes and 3 bar map. Was going to add IPD plenum also, but seems as if most don’t think that it works.
09-23-2019, 01:08 PM
#27
Burning Brakes
Have a set of inlet pipes Ill sell you. pretty much brand new
09-23-2019, 02:55 PM
#28
It "works" it just does not do anything to add power. If you want to make more power you need to change Volumetric Efficiency or VE. The IPD plenum does not in of itself do this, it is a supporting mod for a host of other changes to help you fully realize the changes in VE. It really is a min/max accessory, if you want to be smart about where your $$'s are spent then skip the plenum and add heat exchangers. Really, anything to cool down the air since heat soak seems to have the largest impact on performance on these applications. Also as has been mentioned measure the total flow and your engine loading, this will tell you where there is room for improvement.