N249 bypass issues...

[Benj225]

same as mine then, only does when im going slowly. And plus, i love the sound!!

 

[slim20vt]

before the bypass mine boosted to 21psi !!

after the by pass it boosts to 20 psi ......... (and holds)

the diffrenece it holds the boost at 20psi....
meaning it dosnet hit 21 then drop back to 18,

more boost that holds not drops is more regulated power........

fact !!!!!

 

[Faisal]

I was wondering how long it would take before you'd pop up on this thread!

Yeah before i did the bypass i didnt get any chatter at all, but since I have i've started to occasioanlly get a little. Not very much though, but im still going to set it a little softer later.

I have to admit i am beginning to notice an improvement with the bypass but could all be in my imagination!

i have the exact same issue! before the bypass it dumped fine, made a lovely woosh
but now after the bypass it sort of stutters at halfway up the rev range, around 2.5k-3k revs. it fine at full boost. it might be a boost leak but everything seems fine, i serviced my dumpvalve which didnt make a difference, dont know if that could be gone... any ideas as to what it could be?

 

[rsmith]

I did a before and after logging on my R when i first did this mod, i have noticed positive improvements, i also did logs as below, the boost curve is a log smoother and less flucuations too.

http://www.seatcupra.net/forums/showthread.php?t=215185&highlight=n249

 

[Lee M]

My car ran like a bag of ass when I did my bypass. I had running problems with the car and took it to AmD to look at it.

The problem was the MAF but they also said that the bypass was causing problems too, all back to standard now and running much better too.


Cheers

Lee

 

[J0N]

I had problems with my car not reaching the correct boost. Turned out to be a problem with my map not requesting a high enough engine load but reversing the bypass certainly helped rectify this before I got my ECU re-flashed. Would'nt bother with this mod tbh.

 

[rsmith]

it seems to be a bit hit and miss this mod.if it works, great, if not, then a least its easy to undo.

 

[Faisal]

i thought that having issues after doing it highlights a problem... i was running logs, and it seems im never reaching anywhere near requested boost...im going to try another dv,if that doesnt solve it,im unbypassing it -.-