Still no one running LT-12's yet

[Edge]

no fear. it must.

But I'm wondering what rpm the boost starts building and when it reaches full boost on MattR's car.

And also how is it tuning for idle?

[MattR]

idling is a bastard when cold. not sure if it has a cold start built in? accually thinking of putting in a manual choke. The td06 come on boost bout 4300 and full boost at 5000, it will spin the wheels in 3gear on boost in the dry and all gears in the wet. It revs all the way to 9000 in 5th gear, not sure what speed that is though??

[Roy13]

Your cold idle problem is easily fixed, take it to your tuner and they will sort it with just a few cold starts if not get back to me and i'll give you some pointers!

But how does you car return to idle when warm, and how high is the idle? Mine stalls if set to 750rpm when pulling up at a set of lights, if done gently it idles fine but you carn't even free rev it without it coughing and splutering!!

[MattR]

mine idles at bout 700rpm which is fine, in the wet it doesnt idle at the lights at all.

[DESCR8]

What engine has you got that rev's to 9,000rpm?

700

[confak]

I have the plug in microtech installed in my r33 for a couple of weeks now. I have had poor fuel consuption although installing an air temp sensor might help this problem. Also i am going back to set up the cruise mode properly to my driving conditions for max and safe fuel consumption. At the moment i have managed about 250kms out of a full tank and driving conservatively. Although idle is fine and the power curve seems smooth.

The difference of an aftermarket ECU is defiately worth while in a performance point of view. I have noticed a good power gain all round.

[Roy13]

Confak

So what mods has you car got to go along side the computer, everyone seems to have lots of expensive gear alone with it. Who is doing the tuning for u. If i dare say so the air temp sender will not help fuel consumption but asist the car to run well in all wether conditions! Are you running the base prgram on normal mode to use this much fuel?

MattR

This not idling in the wet is interesting do you have the aditional air temp sender?

[Trotts33]

Hi guys, this is my fist time at this so forgive me if I write something stupid. Just about to install my LT12 which I got from RPM. Firstly I must get rid of the dreaded misfire at 4500 - 5000 rpm which only developed 2 weeks ago. Have changed and gapped plugs to .8 and running standard boost, no luck, about to test coil packs.

[Roy13]

Good idea the first place to look is were the top of the rubber boot meets the coil pack, there are usually visable cracks!

[Roy13]

What mods has you car got?

[Trotts33]

So the faults are often visible?

Only had the car 6 months, 3" exhaust from cat back, not sure if cat is hi flo, how can you tell? No other mods yet FMI is on its way. I figure I want to be able to tune it before I throw everthing at it.

[Roy13]

Good thinking so are you going to tune it your self or get some shop to do it for you?

If you'd like i can probably send a picture of a craked coil (or 3). Even a picture of my matrix tables.

[Trotts33]

I keep getting disconected, back on line tomorrow. Will begin my install shortly, I will be using laptop for tune, just hope new USB to com adaptor works. I am considering driving to Adelaide for first tune. I'll keep you posted on progress.

Regards

[Roy13]

Common spot for cracks to occour!

[MattR]

Roy13 dont know if ive got the air temp sender how do I find out??

[Roy13]

The standard computer doesn't use one so there isn't a Nissan one as such but when they installed the Microtech it is also optional! Have a look in the plenum or more likly in the piping that runs from the intercooler to the throtle body. It look like a threaded gold sensor with a grey plug and two wires coming from it one black ( running back to the computer ) and one Brown to earth or vise versa it doesn't matter!

Its about the size of a large thumb and has Delco written on it.

[gjb977]

I had an LT12 put in about 2 weeks ago. Bloody brilliant. The best money I have ever spent on my car !

[Trotts33]

I got my LT12 in and finished today, I agree with gjb977, what a hoot.

[Cubes]

Did the off boost drivability improve?

[gjb977]

The off boost drivability is magic. It is just like a N/A.

I didn't think it possible and I thought my tuner was bullsh&tting me when he said it would be better than it was before.

When the revs hit nearly 4,000 is when the power magic happens. (I also got a 500hp turbo installed)