CR140 Flapper Valve Performance...

[unclesfunnyonions]

I've got the same engine/car as you 2strokecorky but mine has a cast manifold with no flappers (yours is plastic, right?) what year is your car?

Alex.

 

[2STROKECORKY]

no alex mine is an aluminium/cast manifold

 

[nikhsub1]

So, how can we get this info and why does it seem to be super secret?

 

[2STROKECORKY]

its not super secret, its just certain things can be done in the us, and some can not regarding emisions

 

[nikhsub1]

its not super secret, its just certain things can be done in the us, and some can not regarding emisions

Can you PM me more info? I PM'd you with my email address yesterday. TIA!

 

[storx]

Ok, did a little playing around the other day and found that if i unplug it.. the car is significant slower from a dead stop to 20mph, but the 20mph+ area the car wakes up more. I am not sure if this is significant to the fact i am big turbo.. but this is the results of my findings. I sent my tuner an email asking about it but still waiting on reply. He been superbusy with the summer time approaching and everyone wanting tunes for car shows and stuff.

 

[2STROKECORKY]

Ok, did a little playing around the other day and found that if i unplug it.. the car is significant slower from a dead stop to 20mph, but the 20mph+ area the car wakes up more. I am not sure if this is significant to the fact i am big turbo.. but this is the results of my findings. I sent my tuner an email asking about it but still waiting on reply. He been superbusy with the summer time approaching and everyone wanting tunes for car shows and stuff.

Just unplugging it and leaving flaps in situ. Will cause the above probs due to the gasses getting drawn against the flaps. Removing the whole lot of junk completely is the only way forward

 

[storx]

Just unplugging it and leaving flaps in situ. Will cause the above probs due to the gasses getting drawn against the flaps. Removing the whole lot of junk completely is the only way forward

i dont know if that is the case as when its unplugged the flaps default open...
also weird enough the car didnt through a check engine light the entire like 20 min drive testing it out..

 

[nikhsub1]

i dont know if that is the case as when its unplugged the flaps default open...
also weird enough the car didnt through a check engine light the entire like 20 min drive testing it out..

Yes but even in the open position they block flow... best to remove is what he is saying, what is the function of this?

 

[DZLmk6]

Copied from the self study program :
Through the positioning of the flap valves, the swirl
of the intake air is adjusted based on the engine
speed and load.


Flap Valve Function
During idling and at low engine speeds, the flap
valves are closed. This leads to high swirl formation,
with results in good mixture formation.

During driving operation, the flap valves are adjusted
continuously based on the load and engine speed.
Thus for each operating range the optimum air
movement is available.

Starting at an engine speed of approximately 3000
rpm, the flap valves are completely open. The
increased throughput of air insures good filling of the
combustion chamber.

 

[unclesfunnyonions]

Right, looking at my manifold I don't have and electrically operated flapper set up, the only thing i can see is a vacuum operated jobbie on the left hand side.

I assume this is it?


Alex.

 

[LNXGUY]

If someone removes the flaps, make sure to do a DIY with pics!

 

[storx]

Mark replied to me, we will be doing tuning on this in the near future to see if it can truely be tuned to help.. if we cant i will probably remove it.

 

[oldpoopie]

If someone removes the flaps, make sure to do a DIY with pics!

Lol. Easy, just use needle nose vice grips and pull each flap off the spot welds.

 

[2STROKECORKY]

Apologies to those that are still awaiting pics and details, my Internet is down at home so can't access emails,

Regarding mods to do this,
I recommend doing this regardless of tune, I'm aware the manual states open or shut details of what exactly the flaps do. And to be honest I think it's massively dramatised.

I see them as a restriction and nothing else, hence when I removed them I saw an average of 6mpg increase and lots more power with back to back testing.

I can talk anybody through removal if they so wish

 

[unclesfunnyonions]

you have PM.


Alex.

 

[nikhsub1]

How long does it take to remove them?

 

[2STROKECORKY]

TOTAL TIME roughly 5 hrs job done if your handy with tools, although that is with cleaning the inlet manifold out aswell..

all pm,s replied to

 

[storx]

2stroke... do you have pictures of the process?? i sent you PM but it says your box is full

 

[2STROKECORKY]

Storx, I didn't do a full photo how to while I was doing it though, but it wouldn't take much to do one, as the photos you have already seen are of the fanimold off the car, if there was enough interest I could put a bit of a how to together

 

[Jeffbucc]

I just pmed you as well, I believe interest is high, and I'll paypal you a 6 pack for going through the effort as well!

 

[EJtdeye]

I also agree that the interest is very high for this mod. I'm definitely glued to this thread.

 

[MVJetta]

I disconnected flap motor just to see what would happen. No check engine light. I seem to have lost some low end torque on the butt dyno. I also have noticed that the Jetta DSG doesn't shudder at low speeds (in a parking garage) but this is all during my lunch break.

I know I didn't remove the flaps but I wanted to see what it would do with the motor disconnected.

Codes P2017 and P2008 popped up. Reattached it.

 

[j3tdi]

Ive had my motor disconnected for a couple days with no CEL. Maybe because I have a Stage 2 tune?

Id like to find a used manifold to rip apart.

 

[nikhsub1]

Id like to find a used manifold to rip apart.

This. New ones aren't that much...

 

[1972SS454]

I knew i had seen something about this for the MK5 gas engines....and i found the link. APR made an intake flap delete kit for the 2.0T FSI. Sooooo....Is something like this required for the CBEA & CJAA?

http://www.goapr.com/products/rfd_20t_ea113.html

Talk about removing without blocking off....

http://www.golfmkv.com/forums/showpost.php?p=3500944&postcount=12

 

[j3tdi]

This. New ones aren't that much...

Ive only found new that come with the flapper motor. Are there any without?

 

[storx]

just a little update. I have had mine unplugged for nearly a week now and driving it around i have not had a hiccup issue that randomly surfaced before yet.. the issue i had was that randomly i go to accelerate and boost would seem to rise like normal but the car just felt sluggish as if it was kinda falling on its own face.. but go away for a while after happening..and drive normal again.. since unplugging the motor.. i have yet to have this issue arise.. and its starting to make me wander if it possibly could be the issue i was getting randomly.. i will keep you guys updated as i am brainstorming what to do on removing this system. I plan to remove it but want to make sure its done correctly I dont know fully if the person i received the pictures from filled the ports connecting all intake runners together or not.. i know they tapped the end where the motor was but never showed the runners. i am trying to come up with a good solution to turn this is into a proper upgrade the easiest and pass the knowledge on to you guys..

Added the pics to page 1

 

[Jeffbucc]

Thanks for doing the leg work as always Storx. If ever on the west coast or driving through Utah. Beer is on me. :thumbup::beer:

Those pictures don't make it look too tough. Did he JB weld fill the cuts or proper weld filling?

 

[2STROKECORKY]

Storx that's one of the little traits with these engines, basically as the flaps are opening and shutting at different times dependent on inlet pressure it will effect the way the car runs.

Hence me putting in my first post that removing the flap system also removed all the nigly traits aswell