Ecu Re-map.anyone Know Places?

[dezzstavrinou]

Hey guys,

I really need my AFM re-maped Via ECU, AS my r33 skyline has a flat spot between 4500rpm up till 6000rpm<

Does anyone know of places in melb / vic that can do this,

It would be much help,

Thank you,

[Birds]

What? Are you sure it's an AFM issue? How have you deduced this? This isn't an ECU tuning problem, not if you have a factory ECU and AFM anyway...

[SS8_Gohan]

your airflow metre remapped????

[dezzstavrinou]

Well This is a problem i found with my car, which on another forum explains down to a T.

R33 GTST flat spot. The talkings over!!!

Some months ago I became a newbie member to the Skyline clan.

I bought a 14 year old R33 GTST, aparently standard apart from a catback exhaust. i bought it with a misfire at 4500 rpm and was assured it was "plugs or something to do with the MPH converter"

Weeks later and having read soooo much "information" on various forums I booked the car in at the first of four! performace specialists that specialised in Jap cars and tuning. It would be wrong of me to name them, BUT the first three all failed to fix the problem, in fairness the third did tell me the problem but apart from fitting an after market ECU and re-mapping it couldnt fix the problem.

The problem was this;- Having fitted a big bore down pipe and de-cat I had a free flowing and free breathing engine. The AFM was reading so much volume that it hit max voltage and at 4500 rpm retarded the ignition and richened the mixture. This had the net effect of dropping 65 BHP off the curve and didn't re-appear untill 6000 rpm.

This is a list of things that were NOT the problem, as replaced or changed:

Coils

Plugs

AFM

Crank angle sensor

ECU

Ignition amplifier

Knock sensors.

The solution:- Re-map the standard ECU to ignore what the AFM is telling the ECU.

Whats ur thourghts?

[dezzstavrinou]

Note ABOVE is from a Forum in england and is not ME,

Yet i have the exact same problem with my car and the way it idles and boost comes on and off in the range.

Haveing read that, It seems this person replaced a few things to fnd out it was just the AFM,

Id rather not spend the money on all unnessosery parts if the solution is only the AFM.

If anyone else has encountered the same problem with their skyline and has fixed the issue please yell out.

"Apparently its a common problem on skylines" And as ive only had it for a week now i have little idea about this car yet.

Thank again!

[SS8_Gohan]

the flat spot is common. Nistune is your best bet if you can find a Z32 ecu, they're right in saying you can 'tune' out the flat spot without much dramas

try splitfire coilpacks if you haven't already.

[dezzstavrinou]

Ok sounds like the Go,

Where is this Nistune place located?

Or a webiste link?

im over this lame boost,

Need a tune asap.

Thanx for ur help, Much appreciated.

[Birds]

I think you're jumping to conclusions way too fast...unless you've done a bunch of modifications to your vehicle (what have you done by the way?) there's no need to "tune around" a problem and that won't necessarily solve it. You'll end up spending a heap of money on getting a tune and end up with the same shit. What if it's turbocharger/actuator/wastegate related? Needs more diagnosis...

[dezzstavrinou]

my car is stock.

its only got Pod Filter.

And 3inch exhaust all the way through.

Hasnt been boosted.

Nothing. Just had a new timeing belt put on. 3 days ago.

ive owned the car for 4 days.

Imported from japan. first australian owner.

Other ways its compleetly stock.

so not sure where the problem is comng from.

" I just really dont want to change heaps of parts to find out its somethign small"

Cause it could be anything really.

Plugs

Ignition

Turbo

AFM

Exhaust

Pod

Coils

ANY engien sensors

Actuator

Anything.

thats why the above post i found from another forum seems to fit the problem and solution.

But i posted it on here for other oppinions?

But yeh " birds" the cars bascly stock?

Whats ur oppinion ? >>>.

cheers mate.

[geraus]

go to dr.drift, he tunes a couple of r33s. http://www.drdrift.com.au/

[Birds]

If your car is that stock then I can tell you now tuning it around this will do nothing of good. It's very rare that an ECU is actually at fault in this kind of circumstance. It sucks having to replace all those small things (which quickly add up) just to clear a gremlin but that's cars for you. I'd recommend getting someone who knows Skylines well to take a look at what is happening with your car. Hook a boost gauge up to it too as this is a very useful diagnosis tool. Your car might be hitting R&R or something high up in the rev range due to overboosting.

Your car having just arrived from Japan anyway the first thing I would be doing is a major service of it, i.e. replacing plugs and maybe coilpacks to begin with. Cleaning AFM etc.

[dezzstavrinou]

thanx for ur help,

It has had major service including timing belt done too.

Im going to put back the stock air filter on see if the problem goes away. could be the AFM not readng properly since i installed pod filter. allthought my machanic says shouldnt make a difference.

Thank god i have a japaneese machanic who loves jap cars he has gorn through so much effort to research the problem with out even seeing the car in person yet.

I shall take it in tomorro and he is going to check the ecu to see if any sensor errors have come up and work it out from there.

but ur right could be anything..

fkn cars.....

[llama_au]

If you've just changed your timing belt and it started after that - your timing could be out. Go back to your mechanic and get them to check your timing with a timing light.

[Cowboy1600]

Mmmm....sound like borked coils packs to me.

I'll be surprised if it has anything to do with the ECU.

Take it to a reputable speed shop and they should be able to find the problem.

Where is "PATTO"? I can't for the life of me figure out which suburb you're talking about. Maybe Pattersons Lakes? If so there are plenty of shops down that way.

[dezzstavrinou]

Mmmm....sound like borked coils packs to me.

I'll be surprised if it has anything to do with the ECU.

Take it to a reputable speed shop and they should be able to find the problem.

Where is "PATTO"? I can't for the life of me figure out which suburb you're talking about. Maybe Pattersons Lakes? If so there are plenty of shops down that way.

yeh Patterson lakes, Spot on, its going in tomorro to get checked out,

good guess. haha

thanx for the help.

[(OO)SKYLINE(OO)]

Hey guys,

I really need my AFM re-maped Via ECU, AS my r33 skyline has a flat spot between 4500rpm up till 6000rpm<

Does anyone know of places in melb / vic that can do this,

It would be much help,

Thank you,

http://www.skylinesaustralia.com/forums/Ch...ni-t327553.html

Status or Chasers both are good at what they do.

[Birds]

Timing or VCT related maybe?

I'm thinking it is indirectly boost related given this is occurring around the time that an R33 kicks into the second stage of boost...perhaps your engine is struggling to deal with the extra couple of psi stage two gives you (could be ignition/fuel system that is struggling).

[Cowboy1600]

Timing or VCT related maybe?

I'm thinking it is indirectly boost related given this is occurring around the time that an R33 kicks into the second stage of boost...perhaps your engine is struggling to deal with the extra couple of psi stage two gives you (could be ignition/fuel system that is struggling).

Could also be the timing belt being a tooth out as has been suggested.

I still doubt it's anything ECU related.

[tavstar34]

It could be anything. lol

try status or chasers.

[llama_au]

Could also be the timing belt being a tooth out as has been suggested.

I still doubt it's anything ECU related.

That's what I was getting at