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  Topic Review (Newest First)
04-22-2016 05:32 AM
lokiinlove what i noticed after installing grimmspeed PnPed manifold is more stable AFR (after adjusting fuel tables to compensate flow changes, since this manifold leaned out AFR a bit).
Butt dyno also senses improvements, acceleration feels smoother during WOT. Even my gf noticed, i always ask her opinion after performance mod without telling her what should have changed, nice reference lol
04-22-2016 05:28 AM
lokiinlove It can make flow more even between runners, if done properly. If not, it can make things only worse.
04-17-2016 08:22 AM
Aysar Zaino I heard that PnP the intake manifold and the throttle body improves the flow of air inside the intake manifold which improves the performance in the car. but why did my performance drop after doing it !!!
10-27-2015 10:59 PM
lokiinlove Ooops, as stated on the top of this page, MAPerformance seem to also no longer offer this service.
10-27-2015 10:57 PM
lokiinlove
Quote:
Originally Posted by VicHGenCoupe View Post
Hey Snoopy,

I really appreciate both your build threads and you explanations of the parts that you use and how you use them. I do have a question about bout the "Port & Polished" intake manifold from Grimmspeed. I have the opportunity to acquire an unused manifold from a friend, however after speaking with another buddy I'm now confused at to whether it's worth it.


It was brought to my attention that even though the stock manifold is not properly balanced, that the stock tuning and timing allocates for that imbalance (well partially anyway). I guess my question is, will the stock tuning run a greater risk on the balanced intake manifold, by leaning out cylinders 2 and 3 because they are now allowing more air into the system?

Am I looking at this all wrong?
Grimmspeed does not longer offer services for GenCoupe as i remember. In case yours is not already done. The other choice now is MAPerformance, which seem like more deep upgrade, but more expensive. In fact they cut manifolds open to port/polish better.
10-26-2015 04:29 AM
Mac Wow! I learned something today!
10-22-2015 09:28 AM
nyangineer
Quote:
Originally Posted by VicHGenCoupe View Post
Hey Snoopy, thanks for that info. So I guess a follow on question would be, is it worth the risk to acquire the intake manifold from my friend if I don't have the knock sensors or EGT probes? Do I run any risks at the moment by installing it into my engine with a spacer and no current turbo upgrades?
There is no risk.
10-21-2015 04:01 PM
VicHGenCoupe Hey Snoopy, thanks for that info. So I guess a follow on question would be, is it worth the risk to acquire the intake manifold from my friend if I don't have the knock sensors or EGT probes? Do I run any risks at the moment by installing it into my engine with a spacer and no current turbo upgrades?
10-17-2015 07:03 PM
Snoopy0812 The OE ECU doesn't have the ability to adjust fueling or ignition per cylinder to compensate for air flow. To do it accurately and properly, each cylinder would have a knock sensor and or an EGT probe like some diesels do.
10-17-2015 11:07 AM
VicHGenCoupe Hey Snoopy,

I really appreciate both your build threads and you explanations of the parts that you use and how you use them. I do have a question about bout the "Port & Polished" intake manifold from Grimmspeed. I have the opportunity to acquire an unused manifold from a friend, however after speaking with another buddy I'm now confused at to whether it's worth it.


It was brought to my attention that even though the stock manifold is not properly balanced, that the stock tuning and timing allocates for that imbalance (well partially anyway). I guess my question is, will the stock tuning run a greater risk on the balanced intake manifold, by leaning out cylinders 2 and 3 because they are now allowing more air into the system?

Am I looking at this all wrong?
09-28-2015 05:08 PM
Snoopy0812 ^ would only apply if the throttle body spacer is phenolic, which no one has made yet, so aluminium + aluminium + aluminium = still transferring heat.

As Red said though, it's useless on FI engines except to add ports. Good for nitrous and meth injection where you want it after the valve flap but not at each port.
09-28-2015 10:04 AM
Red Raspberry A throttle body spacer is only good if you need extra vacuum ports. otherwise does nothing. I suppose it does allow you to still keep the TB hot with the attached coolant hose without transferring that heat to the intake manifold.
09-28-2015 10:02 AM
guybo 2.0T q:
How does a throttle body spacer fit into all this? Would it increase turbo lag but help on the low end when off boost?
09-26-2015 06:20 PM
imamooc
Quote:
Originally Posted by Mtrytko View Post
So i have been looking into getting my intake manifold port and polished and Maperformance doesnt do it anymore so i called up some places (Performance Porting, Jdm Concepts, and Carolina Dyno) and they said that they can offer this service in a rev 3 style where they will cut it open. Is there any reason that I shouldnt go through with these companies because its been bothering me that it was so easy for me to find 3 places in 10 min but nobody had utilized them
I'd like to know about this too, been looking for a pnp solution for 3.8s...
09-23-2015 08:29 PM
Mtrytko
Quote:
Originally Posted by Genesaur View Post
Was seriously about to make another thread for this question, but seen this manifold thread, so I decided to take a peek. I swear, a few months ago there was 1 or 2 shops that did the PnP. Now I cant find a single one..
well as you can see in my previous post there are a couple of companies that are still willing to do this service i just wonder how reputable they are
09-23-2015 04:55 PM
Genesaur
Quote:
Originally Posted by Mtrytko View Post
So i have been looking into getting my intake manifold port and polished and Maperformance doesnt do it anymore so i called up some places (Performance Porting, Jdm Concepts, and Carolina Dyno) and they said that they can offer this service in a rev 3 style where they will cut it open. Is there any reason that I shouldnt go through with these companies because its been bothering me that it was so easy for me to find 3 places in 10 min but nobody had utilized them
Was seriously about to make another thread for this question, but seen this manifold thread, so I decided to take a peek. I swear, a few months ago there was 1 or 2 shops that did the PnP. Now I cant find a single one..
09-22-2015 01:21 PM
Mtrytko So i have been looking into getting my intake manifold port and polished and Maperformance doesnt do it anymore so i called up some places (Performance Porting, Jdm Concepts, and Carolina Dyno) and they said that they can offer this service in a rev 3 style where they will cut it open. Is there any reason that I shouldnt go through with these companies because its been bothering me that it was so easy for me to find 3 places in 10 min but nobody had utilized them
05-26-2014 06:40 PM
Mazukou
Quote:
Originally Posted by Snoopy0812 View Post
lighter, highly unlikely to heat soak.. a few but likely you'd want to tune for it.

Should note, it's never been flow benched, which should be done before someone starts pushing more and more to go that route.
i may have to look into that in the future, figure out if im better off with that route or the GP flow balance
05-26-2014 05:26 PM
Snoopy0812 lighter, highly unlikely to heat soak.. a few but likely you'd want to tune for it.

Should note, it's never been flow benched, which should be done before someone starts pushing more and more to go that route.
05-26-2014 04:39 PM
Mazukou so would there be any benefit to be had by getting an intake manifold from the sedan and installing it on the coupe?
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