Just thought I'd say I agree with Martyn, RR operator talking ****. Get the car logged with vag-com. ( N75Js seem to cause a lot of trouble in my experience.)
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My LCR is running dangerously lean!?!
- Thread starter leon7284
- Start date
ive still got the standard one so i may put that in tomorrow and see if there is any difference. should i notice any do you think. i had it with me when i was there but they didnt have the time to let me change it quick and do another run : (
I still think the car is fine. What can you tell from a post cat AFR reading? Now if they took a pre cat reading i'd be able to understand.
im going back there once i have scored this forge intercooler.
can the n75 affect my idle as i noticed its made my boost gauge say -0.5 now instead of -0.6 and it rumbles and shakes not sit silently like it used to
can the n75 affect my idle as i noticed its made my boost gauge say -0.5 now instead of -0.6 and it rumbles and shakes not sit silently like it used to
I try not to mess with things i don't understand, until i understand them. Have a search and read about the n75 valve on here - there is loads of info. From what i understand about it, (and thats not much) it doesnt give MORE boost... it just gives the boost at a different point in the rev range. Thus you might think you've got more boost, but at other points you'd have less.
Thats my understanding anyway - anda standard car will be expecting a standard valve and figures, by changing it you might cause problems.
Also, unless I'm mistaken, there is no exhaust system listed in your signature, so i didnt know you had one. If you have a FULL (turbo back, not cat-back) system, then perhaps it'll be a bit higher, but again, not much. As I've said, RR figures vary - and don't foget the fuel you use will make a difference too!
Thats my understanding anyway - anda standard car will be expecting a standard valve and figures, by changing it you might cause problems.
Also, unless I'm mistaken, there is no exhaust system listed in your signature, so i didnt know you had one. If you have a FULL (turbo back, not cat-back) system, then perhaps it'll be a bit higher, but again, not much. As I've said, RR figures vary - and don't foget the fuel you use will make a difference too!
pabs- check post #9!
Im definatly changing back tomorrow and infuture i will follow your advise and not do something till i understand what it does!!!
Updating my sig now, exhaust was my latest mod.
Im definatly changing back tomorrow and infuture i will follow your advise and not do something till i understand what it does!!!
Updating my sig now, exhaust was my latest mod.
lol damn, knew i'd miss something 
I'm not having a go at you changing the n75 mate, sorry if it sounded that way - and u don't need my advise - i know nothing! I'd just make sure that the general thoughts of this forum, and tuners, was that it was worth doing before you do it. I'm scared sh*tless of changing something and messing it up in the process.
I'm not having a go at you changing the n75 mate, sorry if it sounded that way - and u don't need my advise - i know nothing! I'd just make sure that the general thoughts of this forum, and tuners, was that it was worth doing before you do it. I'm scared sh*tless of changing something and messing it up in the process.
Sh*t sorry mate my previous post sounded well snappy! 
Didnt mean to come out like that.
i have thought about taking it out before that it maybe causing problems- so you have just convinced me to go through with it thats what i was trying to say.
Didnt mean to come out like that.
i have thought about taking it out before that it maybe causing problems- so you have just convinced me to go through with it thats what i was trying to say.
I would have thought the milltek downpipe and cat would be worth a good 10 bhp. My personal feeling is that while induction kits make a bit of noise and let you hear your DV operating, they don't give you extra power over a clean panel filter.
What was your torque figure?
What was your torque figure?
Whichever way you look at it - if the exhaust gives you the power, and the induction kit doesnt, you still end up with the same figure.
When you've got some vag-com logs showing you that you are running lean, post em up on here and then fault find.
Or perhaps go to another RR and see what they say? Get a second opinion? If you really are worried.
When you've got some vag-com logs showing you that you are running lean, post em up on here and then fault find.
Or perhaps go to another RR and see what they say? Get a second opinion? If you really are worried.
think i may just have to do that, i have another one local but they charge £90!!! My mates dad works for VW and he can 'borrow' their vag com so hopefully this week i can get some logs posted.
Many thanks everyone.
Many thanks everyone.
Well you're not TOO far from Portsmouth - and JKM are there with a top of the range Dyno-Dynamics RR
Or you could just use the old tried and tested method if you're still worried. Remove the plastic engine cover and the left hand coil pack. Take out the spark plug from underneath. If its gray/whiteish around the electrode, the car is running lean, black its running rich, light chocolate brown its running correctly.
First of all, your car is catalysed and I presume their sensor was shoved up the exhaust pipe.
Your car is fitted with a wideband lambda probe which deals with air fuel ratio (mixture)
you should check with vag-com the readings of block 30/31 as well as block 002 and 115 to see the actual air fuel ratio, boost and mass air flow to confirm IF anything is in fact wrong at all before spending money of stuff you may well not need.
www.ross-tech.com for vag-com or someone off here who is local to you maybe can oblige perhaps.
If I were you I would ask for a 2nd opinion.
Your car is fitted with a wideband lambda probe which deals with air fuel ratio (mixture)
you should check with vag-com the readings of block 30/31 as well as block 002 and 115 to see the actual air fuel ratio, boost and mass air flow to confirm IF anything is in fact wrong at all before spending money of stuff you may well not need.
www.ross-tech.com for vag-com or someone off here who is local to you maybe can oblige perhaps.
If I were you I would ask for a 2nd opinion.
Cheers for that, my mates dad is going to have a look tomorrow evening hopefully ill get him to check those bits out.
Do you know exactly where i need to connect my air/fuel ratio gauge grey wire to? Ive got it on the grey one off the lamba but gauge does not read anything?
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