is this easy to change and how much should it cost...car feels abit slugish sumtimes i was in 5th gear and i was strugling to ovatake a corsa vxr...cars standard apart from remap (racedynamix) panel filter prodrive backbox...wud of thought the car wud be running round the 300 mark but just doesnt feel like it...when i had the car mapped we noticed that the car wud think its in neutal when changing gear and at high rpm the camms wud stop, am i right in sayin this wud happen,not to clued up on cars..wud this switch improve performance or cud it be sumthin else had clutch changed recently and there were no fault codes,inless i exspect to much from the scoob had her 3 months now...

 

Yes, replacing the NPS will bring a chunk more power Jay. Yes yours was flickering on/off in 4th upwards as discussed and needs replacing as it was deactivating AVCS and thus reducing power/torque at that point.

The Corsa VXr is a much lighter car though than yours so dont expect to completely breeze by.

 

I will give you the cost on the part later as mine is being replaced today at service time, it's not too expensive though, it's just getting one from IM that's the issue.
Your car will be feeling laggier between gear changes and restricting the use of the full power band

Tony

 

You can change them quite easily by dropping the rear gearbox mountings. Mine only needed a slight adjustment. Fitting a thin nylon washer normally helps as the switch wears and goes out of adjustment. There is a bit of trial and error involved but it worked fine for years after.

 

is this something found only in automatic impreza's if not what is it and what does it do please

 

Found in new age cars with avcs and it does exactly what it says on the tin
Basically it tells your car when you are in neutral and takes the load off the engine, when it goes wrong you will normally feel the car isn't as responsive as normal as it stays in the off position

Tony

 

cheers tony,

 

cheers tony how much did it cost to supply and fit...i didnt exspect the npc to giv me such loss of power as im new to the scooby thats why i havent rushed to get it done afta we did the map but with that corsa episode and with the recent gear changes its gettin worse so now im acting on it..thanx for the reply duncan,tony..........and is it easy to replace as my brother might atempt to do it will i need to reset ecu and will the map be fine with the added performance with the new npc...cheers

 

I will have the cost for you tomorrow, think its about 70ish quid for the part though
It wont affect the map and no you wont have to reset the ecu


Tony

 

http://cgi.ebay.co.uk/GENUINE-SUBARU...5#ht_720wt_698



done mine few year ago,not the easiest part to change as its very limited for space ,gearbox mount off and squeeze you arm/hand down the tunnel

 

Mine was worn when I got my car, was flat as a fart a lot of the time. I removed the old one and thinned a washer down and replaced it with new washer. It made a fair difference and amazing that some people are driving about with them dead and loosing performance. I actually bought a new one but I'll wait until mine starts playing up again before fitting.

 

just ordered one its coming 2morro...u have to take the gearbox mounts of ? didnt know u had to do all that dont really wnt to pay ova the top just to replace a sensor so my brother is goin to do it but didnt know u had to remove gearbox mounts etc...do u have to drop the gearbox??? we have onley a jack and a few tools lol think this is goin to be more of a mission then i thought...if i never had my car mapped i wud of never of known it was fooked as had no engine light come on etc should of got this done afta the map but never got round to doin it...car does feel like its lacking that pull at high rev this did show in the map tho..bloody sensors never had this wid me RS...

 

1. well fitted the nps..and didnt notice a vast improvement to high end torque....gonna get it on the rolling road c wat weve got...and wat a pain in the **** to fit, the old switch looked ok weather it was fooked in side but the black nib looked ok

 

Just a quick one guys.

I've had a UK 6 speed installed in a MY06 WRX. When I come to traffic lights / rolling stop in neutral, the engine cuts. Happened today when I came into our estate, turned a 90 degree bend and put into neutral. Engine cut half way into turn, lost power steering and brakes.

I've been told that the NPS is actually reversed (the signal or the 1/0) on the 6 speed boxes and this could be the issue. However, as it only affected AVCS, I didn't think this could be it due to my car not having VVT?

Cheers

Lee

 

As I said Lee, a mapper should be able to "toggle" the value so it reads correctly...

Well, a decent one anyway...

dunx

P.S. It stalled because the ecu didn't know it was in neutral...

 

Is that what it was Dunx yeah? Cool!
Just going over worrying thoughts in my head! All should be better tomorrow after the map

Andy sends his regards too!

 

Mine did the same due to going bug to hawk...

Andy who ?

Andy N or the "Gaffer" ?

dunx

P.S. Off down on to AET on Friday for a scrounge...

 

OK - another issue....! Due to the Hawkeye being a drive-by-wire system, the impulse feed cannot be inverted on the ecutek!! Spoken to ecutek and they've confirmed it .... !

As such, Andy N is having to cut the wire from the gearbox sender, install a relay which basically reverses the signal!

Also, due to different ratios, was getting DET at the higher end, that's been resolved and is running a little quicker now by all accounts.

 

Wanna buy a hawkeye box ?

dunx

 

Hi would i have the neutral switch on my 94 type-ra ? i might change it as mine has never been done.

John

 

Swap ya