What did you do to your Polo today?

[vwthunder]

"The N249 system allows the ECU to open the diverter valve if it wants to. The DV is a mechanical system that does the same job, and removing it can smooth out the power delivery"
I think all it really does is allow the car to dump boost and not over boost, along with the N75 and other things. Too much crap on the car that is not needed

A lot of threads on Vortex about it, most saying it is not needed so i thought i would have a go
Car seems to boost a bit harder (higher spike)

Im sure Noone will chime in

It does throw up a code as some of the sensors are unplugged, most people just solder in resistors, so the car thinks there is a sensor there but there isnt

[seangti]

I’m a tight arse, so instead of getting a the Seat pipe I made up my own fiberglass air scoop that is half as wide again at the front so it rams the air in. I also put in a egay Pipercross airfilter and blow-off valve. After a bit of messing with the spring clicks on the valve I’m happy with the results for around $220 total.

Pictures??

[noone]

Im sure Noone will chime in

Come on, I've been really good and not posted 50 times a day...

The N249 does exactly that, its the bit thats on the other end of the diverter valve vacuum tube.

Bypassing the N249 removes the ECU's ability to bleed boost for whatever reason it decides. This was very popular with the Mk4's, there are also a lot of guys running this setup on the Polo UK site. I bypassed this for a few hundred kms about 6 months ago and did not notice any benefit, so I reconnected.

Each to their own, if you remove, you are potentially bypassing a safety mecanism, but there are plenty of bypasses running strong, so its not likely to cause issues (don't take my word on that).

[bfeboi]

Its finally happened.

The rear control arm bushing has torn and causing knocking from under the car. Now i gotta replace them with the solid bushings tomorrow after work ~!FUN!~







... or should i wait till i get a set of coilovers and fit it all in one go ......hmmm.....

[ssman]

Nice, intrested in the delete

Finished painting my valve cover, also got the polished manifold on a week or so ago.
Removed all the N249 stuff to, car seems to be running better, boosting harder
Changed the plugs

Need to finish polishing throttle body

Waiting on a Audi R8 Oil Cap

[instigator]

some good chiptuners can remove the N249 valve out of the ECU system.
if you just disconnect it you may get a error.
or you can bypass them with resistors, works most of the time.

ps: VW thunder: verry nice engine bay!

[break]

Last night I finally got around to running the Subaru Upper Engine Cleaner through the Polo.

Wow, what a difference that made. It's revving a little more freely an idling smoother. Definitely recommended for the $18 it cost me for the can.

[Jmac]

Ive used it on a few boxsters that had zero compression due to carbon. This is the stuff for that, its really good gear.
Jmac

[break]

Ive used it on a few boxsters that had zero compression due to carbon. This is the stuff for that, its really good gear.
Jmac

Yeah, i'm absolutely gobsmacked at how much of a difference it made.

That reminds me, any eta on those pollen filters? (your inbox is full )

[bfeboi]

Its finally happened.

The rear control arm bushing has torn and causing knocking from under the car. Now i gotta replace them with the solid bushings tomorrow after work ~!FUN!~







... or should i wait till i get a set of coilovers and fit it all in one go ......hmmm.....

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