Dummy GPF Delete OAP DIY “Big Genitalia Mod”
#16
This started off as a joke, but for three hours of your time, this might be a good temporary solution for those who are waiting for more long tube race manifold + Catted OAPs to hit the market.
After a member’s witty reply on another thread, I said to my self, why not just get rid of the ceramic matrix that’s in there to free up the exhaust a little?
Three hour project for both side.
I haven’t met another 718 GT4/S/Sypder owner in the area with OAPs so I can’t give you a first person impression on sound note, but I’d bet it’s close to the other GPF delete OAPs.
Cost me $9.99 because I drank a handle of beers 🍻
Your mileage may vary: For OFF-ROAD USE ONLY, blah blah blah.
After a member’s witty reply on another thread, I said to my self, why not just get rid of the ceramic matrix that’s in there to free up the exhaust a little?
Three hour project for both side.
I haven’t met another 718 GT4/S/Sypder owner in the area with OAPs so I can’t give you a first person impression on sound note, but I’d bet it’s close to the other GPF delete OAPs.
Cost me $9.99 because I drank a handle of beers 🍻
Your mileage may vary: For OFF-ROAD USE ONLY, blah blah blah.
#17
Rennlist Member
Thread Starter
I’ve disabled the PSE using the set-screw mod, assuming I’ve done it correctly, valves are open,
The following 2 users liked this post by DC021:
tigerhonaker (12-29-2020),
UncleDude (12-15-2020)
#18
Rennlist Member
Thread Starter
The following users liked this post:
slilley (12-16-2020)
#19
Rennlist Member
Thread Starter
#20
Got it. Thank you. Will likely give this a go over the weekend
#21
Rennlist Member
I’m assuming no CELs? Supposedly the factory included this in US cars to maintain the same backpressure so they wouldn’t have to remap the engine. Not sure if that is BS or not.
I eliminated the center muffler on my 991 and did have rough idle so I was inclined to believe it.
I eliminated the center muffler on my 991 and did have rough idle so I was inclined to believe it.
#22
Rennlist Member
Thread Starter
I’m assuming no CELs? Supposedly the factory included this in US cars to maintain the same backpressure so they wouldn’t have to remap the engine. Not sure if that is BS or not.
I eliminated the center muffler on my 991 and did have rough idle so I was inclined to believe it.
I eliminated the center muffler on my 991 and did have rough idle so I was inclined to believe it.
The factory calibration seems to have a pretty wide range of adaptations, with Dundon and JCR running Long-Tube Race Header setups on the factory tune without reported issues.
I’m also wondering if Porsche didn’t keep the GPF on the North American cars just so consumers in the EU wouldn’t complain that the NA cars sounds “better.”
Last edited by DC021; 12-15-2020 at 11:01 PM.
#23
#24
You gotta be kidding. I was thinking about doing that during the winter while my gt4 is stored in my garage. I tought about that all day today. I almost made a thread about it to ask fellow rennlisters if someone had tried it but I was scared that I would get ridiculed for being cheap and not buying proper OAPs.
Congratulations for your work.
did it take 3 hours total including uninstalling, gutting and reinstalling?
BTW my vote for the name is “redneck OAP” no offense to anyone.
9,99 for the beers 🍻 lol
Congratulations for your work.
did it take 3 hours total including uninstalling, gutting and reinstalling?
BTW my vote for the name is “redneck OAP” no offense to anyone.
9,99 for the beers 🍻 lol
The following users liked this post:
skeeter714 (12-17-2020)
#25
Rennlist Member
Thread Starter
You gotta be kidding. I was thinking about doing that during the winter while my gt4 is stored in my garage. I tought about that all day today. I almost made a thread about it to ask fellow rennlisters if someone had tried it but I was scared that I would get ridiculed for being cheap and not buying proper OAPs.
Congratulations for your work.
did it take 3 hours total including uninstalling, gutting and reinstalling?
BTW my vote for the name is “redneck OAP” no offense to anyone.
9,99 for the beers 🍻 lol
Congratulations for your work.
did it take 3 hours total including uninstalling, gutting and reinstalling?
BTW my vote for the name is “redneck OAP” no offense to anyone.
9,99 for the beers 🍻 lol
Since there’s at least 2 people vaguely interested, I updated the 1st post with some tools required and basic instructions.
Hope it helps at least one person!
The following 9 users liked this post by DC021:
4MIDABLE (12-16-2020),
Chrismalberts (09-30-2022),
DFW01TT (12-16-2020),
FAhmed (01-26-2022),
FASTRKMAN (12-16-2020),
and 4 others liked this post.
#27
Burning Brakes
Bravo!!! But, you have to get a better name than the Dummy GPF Delete
Last edited by 808c2s; 12-16-2020 at 02:45 AM.
#29
Rennlist Member
Last edited by dnimi123; 12-16-2020 at 03:23 AM.
#30
Burning Brakes
Great job and write up 🙏🍺🍺