N75J Valve... Anyone use it?

[Firefly4322]

I just got in a N75J valve. Getting ready to install it soon. Anyone out there use it? Do you notice a difference in the stock one? Are you happy with it?

What I've heard...

Holds boost longer.
Reduces "surging" on normal acceleration.

This is for the 1.8T engine by the way.

[southOCgti]

i have one. is your car chipped? i wouldn't bother using one unless your car iis chipped because you will not see very big gains. i have giac and with the valve in i spike at 20 psi. w/out the valve i spike and hold at 15 psi. i had a n75 h valve before when i was stock. there wasn't much of a difference w/ it in or out.

[mitssn]

Yeah, there is a lot of posts on this topic over on Vortex, 20vturbo, etc.

I think I use the "H" valve and it is great. They claim it is the same exact valve as the ECS race valve. Either way all cars are different. It took three "types" of N75 for me to find one that ran perfect.

If you need any help, need a VAG, help with parts, try my N75, etc., let me know, I live in Vista and am more than willing to help out a fellow Marine/Dubber

[Firefly4322]

My car has the APR 91 Oct Chip. CAI, FMIC, 4 BAR FPR, Megan Racing Downpipe/CAT, and a Neuspeed catback exhaust.
I use an Autometer C2 Boost Gauge and it is telling me that I am spiking at 20 - 21 psi and staying at 15-17 psi. However, I am getting some air surging on normal accelleration. Not sure if that is normal.
I think that I currently have a N75H valve on there as well.

[Mr. Nobody]

Linky (http://www.parts4vws.com/catalog/product_detail.asp?PartNumber=034906283J)

:tup:

[southOCgti]

the best thing to do is to try one out. every car seems to react different.
p.s. are you sure you need a 4 bar fpr?


I just got in a N75J valve. Getting ready to install it soon. Anyone out there use it? Do you notice a difference in the stock one? Are you happy with it?

What I've heard...

Holds boost longer.
Reduces "surging" on normal acceleration.

This is for the 1.8T engine by the way.

[BLACK 1.8T]

what's the diff between the H and J N75 valves?? just wondering.

[Firefly4322]

Thanks, Im gonna have to do that. As far as the 4 Bar FPR, well it really couldnt hurt. If I can get myself in on half a days worth of a DYNO then I can figure it out along with a bunch of other parts. ( I still have the old one and it was an easy change)


the best thing to do is to try one out. every car seems to react different.
p.s. are you sure you need a 4 bar fpr?

[Firefly4322]

Not sure here. I got an "F" :confused:



what's the diff between the H and J N75 valves?? just wondering.

[southOCgti]

the reason i asked about the 4 bar fpr is because from what i understand it is only useful if you are running revo's 4 bar program. i've talked to guys that have my same setup that tried the 4 bar fpr and they said their car actually felt slower because it was running too rich. not to mention it kills your gas mileage.

Thanks, Im gonna have to do that. As far as the 4 Bar FPR, well it really couldnt hurt. If I can get myself in on half a days worth of a DYNO then I can figure it out along with a bunch of other parts. ( I still have the old one and it was an easy change)

[Firefly4322]

That is nice to know. I did notice that my exhaust is TONS more rich however it doesnt show all that badly in my air/fuel meter. Then again I do have a cat. that is pretty much non-existant. I will have to experiment. I still have the original 3 BAR.
>>> Not sure but isnt the REVO chip nearly the exact same chip as the APR chip since the guy from revo stole the program from APR anyways? It would only be smart to make the program better anyways...
I will be in Pheonix in 3 weeks so I will have to take it to the Dyno for a couple hours and play around



the reason i asked about the 4 bar fpr is because from what i understand it is only useful if you are running revo's 4 bar program. i've talked to guys that have my same setup that tried the 4 bar fpr and they said their car actually felt slower because it was running too rich. not to mention it kills your gas mileage.

[Firefly4322]

I installed the N75J valve to replace my N75F valve.
INCREDIBLE difference. The car seems to pull tons more. It is like getting the car chipped all over again.
Normally my car would spike to 20 psi for less than a second then whip back to about 15 or 16 psi.
Now, it jumps right to 20 HOLDS it solid for a bit then holds it at 18 psi solid.
This is pretty insteresting. I am liking it.
I will have to take this to the dyno and get some results WITH and WITHOUT the N75 J - Valve. I am really curious to see if it is really doing some good.

[Firefly4322]

Well, there is news to this new valve that I installed....

Now the boost punches to 20 psi then slowly levels back down to 16 psi

Im no longer sure that this is the end result. I will have more info in the weeks to come after various testing and possibly a few dyno runs. Just to see what happens.

[southOCgti]

the chips are different, apparently revo copied the direct port process though, but only revo and apr really know whats going on with that one;)

That is nice to know. I did notice that my exhaust is TONS more rich however it doesnt show all that badly in my air/fuel meter. Then again I do have a cat. that is pretty much non-existant. I will have to experiment. I still have the original 3 BAR.
>>> Not sure but isnt the REVO chip nearly the exact same chip as the APR chip since the guy from revo stole the program from APR anyways? It would only be smart to make the program better anyways...
I will be in Pheonix in 3 weeks so I will have to take it to the Dyno for a couple hours and play around

[Firefly4322]

Thanks, good to know.... I talked to the guys at APR and pretty much realized that I am rather screwed. I need to revert back to my 3 Bar if I want to continue to utilize the APR program. Which bites. That program is expensive. Then again switching to revo will cost me 500 bucks. APR doesnt plan on configuring to utilize a 4 bar FPR . Oh well... Hoepfully, I can get a good deal from REVO


the chips are different, apparently revo copied the direct port process though, but only revo and apr really know whats going on with that one;)

[Firefly4322]

This is the final on my N75J. This puppy sux. It was putting me at 20 PSI for about a second and eased it out to 15 psi. On top of that I would get a weird sputter outta then engine on slight accellerations. Back to the other one and I am running constant 17 psi. This engine didnt like it.

[mitssn]

"H" valve muh man....