N249 Bypass guide LCR

[GoogleBear]

Ok cool, did it work ok when you done it

Been meaning to do it I got to do the upper boost hoses so I'll give it a go at same time, might give me more room. Do you think a metre will be enough ??

 

[W11TTX]

I did this the other week and did notice a slight improvement on boost , it seemed to hold the boost better when putting my foot down!

 

[8bit]

Ok cool, did it work ok when you done it

Been meaning to do it I got to do the upper boost hoses so I'll give it a go at same time, might give me more room. Do you think a metre will be enough ??

Well it worked in as much as nothing bad happened but in all honesty I can't say it made any positive difference, not on my car anyway. I wonder if some folks with older cars maybe have older revisions of the N249 that have issues, maybe mine is a later one that works fine so the bypass doesn't benefit me any.

I undid the bypass recently to try and track down another issue. Undoing the bypass didn't fix the issue but I didn't notice any loss of performance, response or any real difference at all, so I've left the N249 in place for now.

 

[GoogleBear]

I put the n249 back in place yesterday, after having the bypass for a good 6 months, same thing really my missus reported a problem which turned out to be a normal dv noise lol.

I defo noticed a difference, holding boost under full throttle and the dv sounding crisper and more positive. The car felt better without it if I'm honest. Mine is a early 53plate 225 LCR is your a late model?

 

[8bit]

I put the n249 back in place yesterday, after having the bypass for a good 6 months, same thing really my missus reported a problem which turned out to be a normal dv noise lol.

I defo noticed a difference, holding boost under full throttle and the dv sounding crisper and more positive. The car felt better without it if I'm honest. Mine is a early 53plate 225 LCR is your a late model?

Yep, registered December 2005 on a 55 plate. I might do it again sometime i've got access to someone with VAGCOM and run some logs with both setups but I don't hear mine dump even slightly when pressing on.

 

[czaki]

Great guide, it helped me a lot, thanks! I haven't tried the car yet since the mod, so I don't know what difference it'll make. I'm using a Forge FMDVSPLTR DV by the way.

Besides all the benefits, what are the cons of doing this mod?

 

[nd-photo.nl]

Boost spike, the vacuum pot makes the boost delivery more fluent.

 

[czaki]

Boost spike, the vacuum pot makes the boost delivery more fluent.

Is that spike high enough to damage the car with no remap?

 

[nd-photo.nl]

If Im correct, the amount of boost will be the same, but the buildup and delivery is faster (and therefore more spikey) with the N249 bypass, than without

 

[czaki]

If Im correct, the amount of boost will be the same, but the buildup and delivery is faster (and therefore more spikey) with the N249 bypass, than without

Hm, than I shouldn't be worried. Thanks!

The car feels better when accelerating and between gear changes so I really like this mod. I've only connected the original hose from the DV with the other hose I've disconected from the N249. It's really hard to find a proper 4 mm hose here as I've found out... But I'm not giving up!

 

[nd-photo.nl]

Ebay is yer friend!

Tsplitter
http://www.ebay.nl/itm/280645528000?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649

4mm silicone hose
http://www.ebay.nl/itm/290685245740?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649

 

[cupragirl]

Just ordered 3meters off Demon Tweaks eBay shop, also found plastic and brass T pieces on there aswell.

Sent from my GT-I9000 using Tapatalk 2

 

[czaki]

Ebay is yer friend!

Yeah, £3 for the hose itself and £10-15 for shipping! I can't even find a cone filter here (no K&N, nor Jetex), PartBox charges me £22 just for the shipping.

 

[nd-photo.nl]

That sucks, maybe an idea to buy a lot of hose and sell it for more in your country so you can earn your shipping back

 

[czaki]

That sucks, maybe an idea to buy a lot of hose and sell it for more in your country so you can earn your shipping back

This doesn't sound as a good business plan to me. I'll keep on searching...

 

[ReDBull]

Great guide, it helped me a lot, thanks! I haven't tried the car yet since the mod, so I don't know what difference it'll make. I'm using a Forge FMDVSPLTR DV by the way.

Besides all the benefits, what are the cons of doing this mod?

Here's a good guild I found when looking for info on N249 removal. It Helped me understand what it does.
http://www.seatcupra.net/forums/showthread.php?t=42406&highlight=N249+removal

 

[czaki]

Here's a good guild I found when looking for info on N249 removal. It Helped me understand what it does.
http://www.seatcupra.net/forums/showthread.php?t=42406&highlight=N249+removal

Thanks, I'll check up the topic in the afternoon!

 

[czaki]

Ebay is yer friend!

Tsplitter
http://www.ebay.nl/itm/280645528000?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649

4mm silicone hose
http://www.ebay.nl/itm/290685245740?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649

It's a miracle! I've found some proper 4 mm hoses for just £3,75 here. I've replaced the original, thicker hose which comes from the top of the DV to the N249, I hope it'll be okay. I've secured at the hose connector with two small clamps, it should be fine (although the connector has bent a little bit, I assume because of the heat ).

 

[nd-photo.nl]

Nice! Just make sure you cant suck in air via those hoses, it needs to be vacuum.

 

[czaki]

Nice! Just make sure you cant suck in air via those hoses, it needs to be vacuum.

The connection seems okay, I've put a clamp on both hoses which are connected by the joiner, as near as possible to the connector itself. I could only use a cable tie on the top of the DV, the FMDVSPLTR doesn't have enough space to fit a clamp there.