Jay A3 's 1.8T On-Going Build Thread

if the map, maf, and injectors are the same as they were on the ko3S, it should be fuelling just fine shouldn't it?

Or have you stuck larger injectors in already before the map jay?
 
Don't be silly prawn, I wouldn't make such a noobie mistake. I would pm everyone first to check :p

Yeh exactly same setup, maf and injectors on the k03s map
 
Lambda position is a little different, that's my thoughts.
 
Do I need to move it to the second position? Hope not if I recall the second position is bunged and welded....
 
Just checked my oil and it's fine. Sitting on the max line. Looking really clean too! Been told to keep an eye on it, so I hope it simply is just over fuelling...
 
lambda isnt used at WOT on M3.8 AFAIK, so its not going to be lambda related.

Weirdly it does seem to play a part on the agu as to where you position it. We've had a few issues with lambda position. On the transition between closed loop and open loop you get a puff of fuel that dissipates. Also can have an affect on trims.

On the same token, Some agu's are more sensitive than others. I know niki has had it before. Odd!
 
AGU's are fecking odd! I've had several issues with lambda position before on my various setups.

If the lamda is moved, it changes the trims, and it seems to apply those changes at WOT also even though it's not relying on the sensor at WOT as it's open loop. God knows if it's meant to. They do weird things at the best of times!
 
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Waiting for this remap is killing me. I have been looking for something to do... Decided my headlights were looking a bit yellow and needed a bit of upgrading. Sourced a spare set from Reesy





So firstly I removed the indicator and the levelling motor.

*tip
Twist the motor to become undone but don't remove it yet as it's still connected to a clip inside. Turn the adjuster at the top so it moves the light towards the rear.



This makes it easier to remove. Tilt the motor and slide it out the clip. They have a tendency to snap but can be bought of eBay for £4 each. Easy to replace.



Remove screws on the indicator side x 3


Remove seal


Pry off the 4 metal clips holding the lens on (2 top and 2 bottom)

Pre heat the oven to 120 degrees. Place the headlight in the oven for 3-4 minutes, this will soften the silicon. Bit tricky but with a flat screw driver and a knife it will come apart.

The light holder itself comes off by unscrewing the adjusters pushing the light out to the front as much as possible



Everything else comes apart easily



Took off all the chrome and with a scotch pad (picked up halfords)





Out comes the black satin paint. Applied around 2 layers


Put back in reverse order. Before I dropped the lens back on, I put the unit back in the oven for a few minutes to soften it up again to get a good seal.


Word of warning the adjuster / cogs can be a bit fragile and worn. Not sure if these can be easily sourced, but luckily I had my old unit as spares



I will get a pic with these on the motor later on today
 
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Nice one jay, they look great.
 
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Definitely look better.
A+ for effort. Go to the top of the class.
 
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The headlight lenses were a little scratches up so I thought I would try the meguiars restoration kit. Comes with sanding pads, plastX and a polishing head.





Turned out nice enough, needs another go at it but impressed with the kit
 
Yeh I can't wait to get it mapped! Currently on the hunt for some saab redtop injectors and the car is ready. Well one or 2 more oil changes.

I'm just phaffing around with cosmetics at the moment as I'm so bored waiting...
 
wow saw that kit here and never took much to it, now i know im gona get one sort my lights to look as pretty as yours :superman:
 
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It's not bad, the sand paper pads they give you isn't enough imo. But the plastX stuff works very well
 
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Nice one mate, k04 is very nice. cant wait to get mine mappe too!
 
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this looks amazing, I wanna paint mine the same colour after seeing yours
 
Any chance the new fuel pump has exposed a failing fuel pressure regulator causing a rich issue.

Kinda like how a new clutch exposes a failing clutch master cylinder.

Stock A3 pump flows ~ 84 Lph
S3,TT225, LCR pump flows ~ 108 Lph
Sytec ITP331 flows 195 Lph @ 3 bar and 174 Lph @ 4 bar
 
I see what you mean. The new fuel pump was installed prior to the engine swap and was fine on the k03s setup. Same map, same injectors, same fpr. Only difference is the k04 turbo...
 
The only thing to change that could affect the tune is the o2 sensor location.

Have you pulled your plugs to see how they look? If they're badly fouled i'd be inclined to change them.

On any other older car i'd say just unhook the battery for 15min to reset the long term fuel but your "lucky" like me and have a dumb as f*ck ME3.8.3 Ecu.
These reset the fuel trims everytime the car switches off, so your car probably runs fine when you first turn her on, once the o2 sensor warms up fuel trims come into play.

If you can't move the o2 sensor I guess you'll have to wait till the tune can be leaned out and/or target AFR voltage changed.
 
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Sounds about right antwan. It doesn't smoke till the sensor is warmed up a little. I haven't checked the plugs and will do this week. Yeh deffo can't move the sensor position so it may be I just wait till the map.
 
Last piece to the puzzle
Sourced saab redtop injectors as my current calibra yellow tops will max out.



Stuck them in an ultrasonic cleaner for a few cycles and job done.

Part number: 0280150431

All I have to do now is wait for map day...
 
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Day 1... I will just leave this here

 
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Top work jay!

Didnt realise this was your thread, scrolled past it god knows how many times but thought it wasnt you as wasnt white lol

Look forward to the finished product :)
 
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Haha it's been around for a while now! Not sure there is going to be much more development on 289bhp. Got 307bhp injectors are at max and fuelling was disappearing too quick. Need to look at some 440s...
 
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Haha it's been around for a while now! Not sure there is going to be much more development on 289bhp. Got 307bhp injectors are at max and fuelling was disappearing too quick. Need to look at some 440s...
Still top result mate

Shows how much attention to detail us fellas pay ey, just like when the mrs gets her hair cut lol

In fairness had scrolled past it god knows how many times but theres lots of users with variations of Jay A3 ;)

Really need to get my **** in gear and catch uo with everyone
 
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