420+bhp project

[Doug_RS2]

Originally posted by s2avant
On a side note, I used to go to school with the lad who's dad owns Ultima sports. The factory is round the corner from where I live.

They look stunning and building it yourself just makes it better

I've been following this guy building his:

build site

One day

[s2avant]

There's loads about in the summer round our way. They look great, sound great and go like the clappers.

I'd love one but first need a garage and a remortgage.

Ben

[A6 AVANT]

Hiya Doug, that looks excellent! A fine job! Impressive!
Now stop foolin' around with it and go and have some fun!

[Doug_RS2]

Originally posted by A6 AVANT
Now stop foolin' around with it and go and have some fun!

I can't have any fun in it - I can't drive WOT as it has the old maps in it - the difference in the injector duty cycle is huge, so god knows what else is well out.

18 days to go, and then

[audiman]

Have to be honest Doug, your car is looking the ********. Cant wait to meet up with you and have a ride. Will be interesting to compare the two cars to see how much faster yours is. Being so young and all, i dont have the same access to money as your older *******s!!!!

[newsh]

Doug
Where did you get that curly hose you've used for the freshh air to the filter area, I need some like that.

Ta

[Doug_RS2]

Originally posted by newsh
Doug
Where did you get that curly hose you've used for the freshh air to the filter area, I need some like that.

I got mine from sfs performance (the silicon hose people):

sfs

but you can also get it from merlin motorsport:

merlin

I got 80mm diameter.

HTH

[Doug_RS2]

Mihnea,

Been driving the car this weekend and there are a few oddities with it.

When I put my foot down (not WOT) and the boost gets to 10psi it starts to hesitate.

When restarting the car, when it is warm, it has burst into life but cut out almost immediately. Then it takes a good few turns before it fires up again.

Although it is quite cold here, there seems to be a lot of smoke from the exhaust at idle.

I just want to know if this all could be down to overfueling or is are the other things I should be looking at?

Doug

[newsh]

Thanks!

Originally posted by Doug_RS2
I got mine from sfs performance (the silicon hose people):

sfs

but you can also get it from merlin motorsport:

merlin

I got 80mm diameter.

HTH

[Mihnea]

Originally posted by Doug_RS2
Mihnea,

Been driving the car this weekend and there are a few oddities with it.

When I put my foot down (not WOT) and the boost gets to 10psi it starts to hesitate.

When restarting the car, when it is warm, it has burst into life but cut out almost immediately. Then it takes a good few turns before it fires up again.

Although it is quite cold here, there seems to be a lot of smoke from the exhaust at idle.

I just want to know if this all could be down to overfueling or is are the other things I should be looking at?

Doug

Doug, check carefully the intake tract for any leaks, so it'll save us headaches while tuning it... otherwise, the boost/hesitation issue sounds like not running enough timing advance to me but we'll see that when I'm inside it with the emulator plugged in, it might also be pinging, though I doubt it's happening at 10 psi... it could also be that the combustion chambers are getting drowned in fuel, especially with those beasts spitting 35% more than RS2 injectors in...

The smoke is certainly due to a rich mixture, can you smell fuel in the exhaust fumes (without getting intoxicated)?

The hot start issue sounds the same for me, too much fuel being injected on start up, you could actually check this with VAG-Com while cranking with a cold engine, then doing it over with a hot engine, though the problem is that the communication gets shut while cranking AFAIK, but it's worth a shot....


Cheers,


Mihnea

[Doug_RS2]

Cheers Mihnea,

I am certain there are no leaks, although i will do some more leak tests to be sure.

Does the injector duty cyle return to a fixed figure after the ignition is off? Or does it remember what it "adapted" to after the previous run with adjustment through the lambda?

I'll try and log it tomorrow .

Thanks
Doug

[Mihnea]

Doug, AFAIK and IME, the lambda regulation isn't active during start-up but it's really weird that it does start after a few tries.... must be a too rich mixture, I can't think of anything else... I'll get you sorted m8, don't worry, that new real-time (or online as the germans call it) emulator that I have really kicks serious ***!!!!

[audiman]

Cant wait to have it tried out on my car! Doug do you know what boost level you are going to run yet?? 1.8-2.0? More

[Mihnea]

I'd say 1.9 from 4000 through 5500, then 1.8 at 6k and 1.5 at 7k should be conservative enough for his rods... but we'll see how efficient the turbo is, if we figure it's good at those boost levels, why not try to push it at 1.7 at 7k?

[audiman]

Sounds good, ill have some of that!! Just keep winding the pressure up until it goes bang!!! Then you know you have found that limit. LOL

But no, really, i will have some of that Mihnea 1.9 bar sounds good to me. Need to chat to you about the tuning on mine, just so i can describe what is happening at what speeds. Has some massive flat spots, and think it is overfuelling, its doing about 12 mpg. It is also hard to drive at low speed. Think i had that boost leak when it was last mapped!

Doug, you will have that to look forward to. Those injectors will make your car drink fuel faster than i can drink pints!!