Filter/Zorst

[Robster_S14]

My S14 is mechanically standard (apart from an ND dump valve) and I was wondering if the addition of a filter and exhaust requires the car to be re-tuned in any way.
This might sound like a stupid question but when I started to play with my old 205 GTi, it ran very lean and I lost power at the top end.
Can the S14 cope with the extra air or is a tune-up/rolling road session in order to keep everything nice and juicy?!?!

Please help!

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Burgundy S14
ND Dump Valve, TIM boost gauge

[dave_s13]

I do believe that your AFM, lambda wotsitmajig and associated electrickery should sort your fuelling/mixture out automatically.

Its only pre-cat s13's (i think) that need to be adjusted to cope with the altered air intake/exhaust.

[Daniel san]

Glad you asked that.

I run a Blitz induction kit, dump valve, SE Nissan de-cat pipe and a Blitz NUR SpecR Cat back system. The guys who carried out this work for me (mentioning no names http://300zx.co.uk/200sx/ubb/wink.gif)didn't bother to check the fueling and this resulted in running 15-20% lean through the mid-range to top end, which in turn resulted in me hammering it down my "private" section of the M25, melting a spark plug into one of the pistons and the piston getting stuck in the bore, causing severe damage. The car ended up off the road for 5 weeks while it was completely re-bored to take the 87mm HKS forged pistons, HKS 1.2mm metal head gasket and then an HKS Super AFR to sort the fuelling out so it doesn't happen again.

Having said all that, there are others that haven't had any problems with this. The again, maybe they don't drive it like I do..... http://300zx.co.uk/200sx/ubb/biggrin.gif

I'd suggest getting it checked out, just to make sure.

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Dan
www.puresx.co.uk

'98 Saphire Blue S14 (manual of course)
Far too many mods to list here, it takes up far too much space and after being asked very nicely I've decided to shorten the sig (Is that a WOOHOO I hear??)
I, have NO SMELLY TREE, have no plans for a smelly tree and do not want a smelly tree, EVER!!!
Do not take offence to anything I say, even though I probably mean it. I am more than slightly mad, so just chill de feck oooot, ok!

[Daniel san]

Theoretically, the lambda sensor should help the ECU to self compensate (that's what they told me anyway). In an ideal world, it may well do, but.....you know what I'm gonna say here.

Get it checked out m8, your lambda sensor might be f*cked, mine was! Funny enough, it happened about 5 weeks outside the warranty!

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Dan
www.puresx.co.uk

'98 Saphire Blue S14 (manual of course)
Far too many mods to list here, it takes up far too much space and after being asked very nicely I've decided to shorten the sig (Is that a WOOHOO I hear??)
I, have NO SMELLY TREE, have no plans for a smelly tree and do not want a smelly tree, EVER!!!
Do not take offence to anything I say, even though I probably mean it. I am more than slightly mad, so just chill de feck oooot, ok!

[Robster_S14]

Thanks for the advice guys. I get paid in the next few days so hopefully I will be sorting myself out a nice filter and exhaust in the very near future.

Oh, and another thing........ alot of my friends run modded cars and haven't bothered to tell the insurance bastards. I don't want to go down this route with the 200 and will probably declare the mods (damn those insurers!!). Does anyone know roughly how much they sting you if you have a nice shiny stainless exhaust and induction kit on a group 17 motor???

(I'm a bit concerned cos I'm only 21 and insurance doesn't seem to like me very much!!) http://300zx.co.uk/200sx/ubb/smile.gif

[Daniel san]

Originally posted by Robster_S14:

(I'm a bit concerned cos I'm only 21 and insurance doesn't seem to like me very much!!) http://300zx.co.uk/200sx/ubb/smile.gif

LOL. I know how you feel. I got my 200 just after my 22nd birthday. Now I'm 23 and they still hate me for driving a 200. Most ins companies just say they can't insure you on this car. http://300zx.co.uk/200sx/ubb/frown.gif

As far as quotes go, Tesco are cheap but don't like mods. Zorst, Filter, Wheels, lowered increased my premium by over £700!!! Takes the P*ss.

I'm with Sterling, through Adrian Flux. They charged me £95 in February this year, to add the Zorst, Filter, DV, Lowered, wheels and traction control. That also included £25 admin fee to add the bits to the policy. Which I thought was damn good.



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Dan
www.puresx.co.uk

'98 Saphire Blue S14 (manual of course)
Far too many mods to list here, it takes up far too much space and after being asked very nicely I've decided to shorten the sig (Is that a WOOHOO I hear??)
I, have NO SMELLY TREE, have no plans for a smelly tree and do not want a smelly tree, EVER!!!
Do not take offence to anything I say, even though I probably mean it. I am more than slightly mad, so just chill de feck oooot, ok!

[Robster_S14]

Cheers Dan,
£120 doesn't sound too bad at all - I thought it might be silly money! I will give my insurers a ring in the week to see what they can do. I know what you mean about Tesco - when I bought the 200 they gave me the lowest quote but I didn't go with them because I heard they hated modifications from original spec. I'm insured by Sabre through 1st Quote and hopefully they won't be too bad.
I noticed you decared your DV, I didn't realise a DV had to be declared - I thought that as long as it doesn't raise bhp or make the car look any different, it wasn't important.

Oh well, you live and learn I suppose http://300zx.co.uk/200sx/ubb/smile.gif

[Bean]

Will the check the fuelling, timing and associated bits when we go to the RR in Bristol?

Or, do they just measure power only?

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95N/S14
(Blitz Nur-R in its box)
http://300zx.co.uk/200sx/rides/beans14/nissan3m_180_135.jpg

Linux/Solaris Trainee Guru

[Bean]

Last questions for today.

I've got the K&N Induction Filter and will be fitting my Blitz Nur-R next week sometime is it worth me having the fuelling checked and maybe an adjustable/uprated AFR fitted.

Does the 200 have an AFR fitted as standard or does it rely on other means?

I'm getting the car serviced in the next week or so, hopefully Nissan will tell me if it's running rich/lean or just sort it out for me anyway as part of a normal service/tune?

Maybe the check this at the RR, as I mentioned in my last post?

Thanks, I'm done now. http://300zx.co.uk/200sx/ubb/biggrin.gif



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95N/S14
(Blitz Nur-R in its box)
http://300zx.co.uk/200sx/rides/beans14/nissan3m_180_135.jpg

Linux/Solaris Trainee Guru

[JohnD76]

Originally posted by BeanS14:
Will the check the fuelling, timing and associated bits when we go to the RR in Bristol?

Or, do they just measure power only?



Bean,

Its just going to be a power run in Bristol.

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John S14a
http://mysmilies.com/s.php?action=random&cat=evil

[Bean]

Originally posted by JohnD76:
Bean,

Its just going to be a power run in Bristol.



Arse, didn't think they would for £10 anyway!!!



------------------
95N/S14
(Blitz Nur-R in its box)
http://300zx.co.uk/200sx/rides/beans14/nissan3m_180_135.jpg

Linux/Solaris Trainee Guru

[Papa Lazarou]

Dans is one example at the extreme end of what can happen, but yes I definately think it is worth fitting something to adjust the fuelling.

A HKS AFR is relatively cheap, does the job, and is a 20 minute job to wire it in. It should be fine until you start getting some more serious mods.

[Daniel san]

It takes a good few hours to adjust it properly though.

It's not part of the service to check the fueling, particularly as the problem is at the higher end of the rev range and they generally don't drive it outside their little plot.

The ECU relies on the AFM and Lambda Sensor working properly and feeding it the correct information so it knows how much fuel to chuck in.

------------------
Dan
www.puresx.co.uk

'98 Saphire Blue S14 (manual of course)
Far too many mods to list here, it takes up far too much space and after being asked very nicely I've decided to shorten the sig (Is that a WOOHOO I hear??)
I, have NO SMELLY TREE, have no plans for a smelly tree and do not want a smelly tree, EVER!!!
Do not take offence to anything I say, even though I probably mean it. I am more than slightly mad, so just chill de feck oooot, ok!

[Bean]

Originally posted by Dan_BlitzedS14:
It takes a good few hours to adjust it properly though.

It's not part of the service to check the fueling, particularly as the problem is at the higher end of the rev range and they generally don't drive it outside their little plot.

The ECU relies on the AFM and Lambda Sensor working properly and feeding it the correct information so it knows how much fuel to chuck in.



Thanks for the info' Dan.

I'd better get my car looked at to make sure it's fuelling properly then. Certainly don't want to blow any pistons. http://300zx.co.uk/200sx/ubb/smile.gif

I guess the 200sx doesn't have any sort of Fuel Regulator at all (adjustable or not) and relies upon the Lambda sensor and AFM Readings.

I'm interested in having a look at your car at the RR.



------------------
95N/S14
(Blitz Nur-R in its box)
http://300zx.co.uk/200sx/rides/beans14/nissan3m_180_135.jpg

Linux/Solaris Trainee Guru