Should possibly put this is 'Engines'...

[_Al_]

...but just in case, I'll try here.

Does anyone know how I can adjust the fuel mixture on my MR2?

It smells fine when I run it but I just took the plugs out and they look like they're running a bit lean.

Cheers,
Al.

[Turbo T]

Al you really need to be doing this with a wideband O2 sensor to make sure you are safe. If they are stock injectors something like an Apexi SAFC2 will work, but if you are running lean on a stock car/injectors you need to have a look at the fuel supply. Pump/filter/FPR.

Hope that helps

[_Al_]

Cheers for that. I'm trying to find myself a rolling road so I can let an expert look at it. Think I'll try not to use it hard till it's been done.

Al.

[tuttle]

Give Vixpy1 (Charlie) a bell at Surrey Rolling Road,if he's in your locale,that is.I'm sure he can sort you out.

[_Al_]

I'm not a million miles away...

I didn't know if Charlie only did group sessions - can't really afford to have him open the place for lil' ole me...

Got to be worth a try - at least that way it's someone I trust! I'll drop him an email.

Cheers,
Al.

[Turbo T]

Al, genuine offer, I am in Watford, but have a portable AFR Analyser if you want to check her FOC quickly.

I have heard good things about the Surrey Rolling Road too, and that will give you a more precise idea, but the offer is there.

[_Al_]

That's a very kind offer! When and where is convenient for you? I have quite a long commute from work so if it's a week night it'd have to be late..

I've just been looking back at my fuel consumption. I'm now getting 33mpg average.

Sure I do a lot of motorway runs but I also do a lot of country lanes...

Surely that's not normal??

[vixpy1]

Turbo T said:

I have heard good things about the Surrey Rolling Road too,

Thanks

[Turbo T]

vixpy1 said:

Turbo T said: I have heard good things about the Surrey Rolling Road too, Thanks

Your welcome, credit where credit is due.

Al most nights/weekends mate. Give me a few days notice and that shold be cool.

[_Al_]

Thanks mate - Girlfriend allowing I'll be booked in with Charlie on Saturday so hopefully won't need to take you up on that, but thanks very much for offering.

Cheers,
Al.

[Batty FTO]

_Al_ said:

Thanks mate - Girlfriend allowing I'll be booked in with Charlie on Saturday so hopefully won't need to take you up on that, but thanks very much for offering. Cheers, Al.

how yellow are the plugs btw?

[Turbo T]

_Al_ said:

Thanks mate - Girlfriend allowing I'll be booked in with Charlie on Saturday so hopefully won't need to take you up on that, but thanks very much for offering. Cheers, Al.

No worries, let us know how you get on and bash the Dyno up with the AFR's on please

[deltafox]

If youre running the standard TCCS ecu youll need to defeat the adaption built into the ecu before attempting any adjustments.

You acheieve this by using a bridging wire across terminals TE1 and E1 in the diagnostic connector in the engine bay.
Youre then free to "twiddle" with things like ignition and fuelling at idle etc.

Dont forget to remove the wire (turn off engine first) when youve finished playing.

[Turbo T]

deltafox said:

If youre running the standard TCCS ecu youll need to defeat the adaption built into the ecu before attempting any adjustments. You acheieve this by using a bridging wire across terminals TE1 and E1 in the diagnostic connector in the engine bay. Youre then free to "twiddle" with things like ignition and fuelling at idle etc. Dont forget to remove the wire (turn off engine first) when youve finished playing.

So are you saying a SAFC wouldnt work without this? All the SAFC does is intercept and alter the stock MAF/MAP signal. Very interest to know the answer.

[_Al_]

Batty FTO said:

how yellow are the plugs btw?

They're not even a tiny bit yellow.

Normally plugs I've seen are tinged brown with carbon.

Mine have a ring of carbon around the base, but the tip and core look very clean indeed.

I know they're pretty new but I've been racking up the miles and would expect them to be looking more browned by now. That's why I'm worried.

Turbo T said:

_Al_ said: Thanks mate - Girlfriend allowing I'll be booked in with Charlie on Saturday so hopefully won't need to take you up on that, but thanks very much for offering. Cheers, Al. No worries, let us know how you get on and bash the Dyno up with the AFR's on please

Most certainly!

deltafox said:

If youre running the standard TCCS ecu youll need to defeat the adaption built into the ecu before attempting any adjustments. You acheieve this by using a bridging wire across terminals TE1 and E1 in the diagnostic connector in the engine bay. Youre then free to "twiddle" with things like ignition and fuelling at idle etc. Dont forget to remove the wire (turn off engine first) when youve finished playing.

Hi mate - I'm running a Blitz Access, which I've been told is a standard unit with a hardwired set of remappings (well, that's my limited understanding of what I was told...).

I think I still need to do the bridge. I'll bring a paperclip with me!

How do I adjust the fuelling once the TE1/E1 bridge is in? Do I need special tools?

I'd like to richen it before I set out. I'm convinced running lean will do it no good...

>> Edited by _Al_ on Wednesday 28th September 09:12

[tuttle]

I expect you've looked at this already, but have you looked at the timing? That can give you lean mix symptoms.Possibly, it could have been previously over advanced a smidge.

[_Al_]

I wondered about that but I don't have the equipment to check it.

That reminds me, I was assuming Charlie would have the kit, but now that I think about it that's kind of a long shot...

How can I do it without a timing light?

And if he doesn't and I can't then is it worth buying this?

http://cgi.ebay.co.uk/ROLSON-NOT-GUYSON-CAR-IGNITION-TIMING-LIGHT_W0QQitemZ8001758598QQcategoryZ30921QQrdZ1QQcmdZViewItem

>> Edited by _Al_ on Wednesday 28th September 10:58

[deltafox]

Howdy. You can tweak the fuelling at idle by popping out the plastic plug on the MAF sensor (if its the flappy door bosch clone ) and adjust the screw underneath.

The SAFC will make a difference as it adjusts the sensor info in conjunction with the tccs mapping.
Better solution is to bugger off the tccs and get a Hydra Nemesis or similar ecu that is standalone and programmable....which funnily enough is my next step.

[tuttle]

Timing: You can do it with a timing (strobe)light.Or static,get your no1 cyl at TDC & check the marks on the wheel.-Just to see if it's been changed from factory setting.
The Hydra ecu's look really good one paper,anyone had any practical experience yet?

[_Al_]

Sorry! Woah! Hold on!

My mechanical knowledge runs about as far as "That looks broken; this looks similar, I will swop them. Where's my axe?".

Words like 'SAFC' and 'tccs mapping' have no meaning!

Basically you're saying there's a screw on the air mass meter than I can turn to adjust the AFR...

Do I need to bridge TE1 and E1 while I'm doing it or is unplugging the sensor lead enough to stop the ECU interfering?

Also, to prevent the trial and error part, can anyone remember which way I turn it to make it run rich?

I know I should use a meter, but there's no decent motorshops - or even a Halfrauds - within 40 minutes of here. I only want to richen it up a bit to ensure it's safe to drive to the RR..

I swear, mod number one is a Dastek + fitting. This Blitz is scaring me.

Thanks for all the help and your unspoken acceptance of my well-tuned stupidity.