flat out running problem?? any ideas
Turbo Mini Forums

ive got 10/40 atm and stock spring,

13.95 1/4 mile on a 2.95 fd. Carnt be that hard to beat!

use 20/50 oil in the dash pot and use 2 spring intertwined togeater .........this will sort that issue

That's what I've got in mine 10/40 & an avonbar spring & steve the thing is with goin back is its 160mile one way & he set the timing at 30+ degrees at 3500 rpm which at the time didn't realise how bad it was & my fuels been wrong aswell I wouldn't have the confidence to go back again you never run back into the fire twice. Been running ok at the min till my brother Killed a turbo today tho

Edited by scott the joiner on 4th Sep, 2011.

sorry to be a pain to anyone who can be arsed to explain to me, but what affects does springs and oil have?

13.95 1/4 mile on a 2.95 fd. Carnt be that hard to beat!

I will be using john sleath rr, Andy and john used him on the van and give good feedback, I have been up and had a chat and he seems to know his onions, plus he uses very good equipment as he normally tunes high power drag cars

Audi s4 b5 - 470bhp & 486ft lbs

On 30th Apr, 2012 Brett said:
yeah stick the bit in and give it a wobble

Just an update turbo swapped comma sonic oil ordered aem ordered but what afr should I be looking for I was reading an engine management book last night & they said 12.7 on full boost does this sound about right?

I personally like a little richer than that. I aim for low 12's high 11's for safety. However I think 12.5-12.7 is where the most power is.

If something is worth doing, it's worth doing half of.

Well I must admit it said that for power its 12.7 for economy its 14 what ever ect ect different ratios for different states of tune I aim for 12 sounds good to me thanks john

I like to see the 12 dead on the gauge on WOT

Audi s4 b5 - 470bhp & 486ft lbs

On 30th Apr, 2012 Brett said:
yeah stick the bit in and give it a wobble

Audi s4 b5 - 470bhp & 486ft lbs

On 30th Apr, 2012 Brett said:
yeah stick the bit in and give it a wobble

Audi s4 b5 - 470bhp & 486ft lbs

On 30th Apr, 2012 Brett said:
yeah stick the bit in and give it a wobble

I changed the needle for an avonbar high boost one & it sorted it & I meant 14 off boost for economy not 14 on wot sorry if that's what it sounded I was intending

On cruise you are aiming for about 14.7:1.

Audi s4 b5 - 470bhp & 486ft lbs

On 30th Apr, 2012 Brett said:
yeah stick the bit in and give it a wobble

scott, when u used to loose power would your turbo make a strange chatter come weeering noise?

13.95 1/4 mile on a 2.95 fd. Carnt be that hard to beat!

I think you need to be a little more flexible. 12.5 -13 AFR will be fine depending on boost level and CR. For example I run my car on either 12psi or 5 psi, 5psi is so low that it runs happily at 13:1.

On cruise I aim for 16:1, 14.7 is unnecessarily rich.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

I run 18psi on 8.5:1 cr with shell v-power, even on a warm day, 30deg. I have had no signs of det.

Edited by bennyy on 13th Sep, 2011.

Audi s4 b5 - 470bhp & 486ft lbs

On 30th Apr, 2012 Brett said:
yeah stick the bit in and give it a wobble

Double post.

Edited by bennyy on 13th Sep, 2011.

Audi s4 b5 - 470bhp & 486ft lbs

On 30th Apr, 2012 Brett said:
yeah stick the bit in and give it a wobble

I,m with wil - 16 or 17 to 1 on cruise is fine .My engine goes off scale at 18:1 when on a very light throttle but still runs just fine - drops straight back to 12:1 as soon as you floor it.

I,m using a standard spring and 10/40 oil.

eden i had no noise from the turbo when i lost power but funny enough when i swaped neddles & was testing it i did start getting a noise from the turbo that i could only explain as you have & about 40mile later it was dead & poring oil down the exhaust

ive got a feeling my turbo is about to go pop

13.95 1/4 mile on a 2.95 fd. Carnt be that hard to beat!

Eden did you ever get to the bottom of your problem mine seems to be back some times its fine then another times it just seems to lean out for unknown reason but not every time. Does it in 3rd &/or 4th but definitely goin lean can be seen on aem & saved before the brick wall cut out happens also iam only set at 10psi boost at the min

yes mate, it was tight guides pinching at top end,

i never had a lean out would just die and take aroud 5-10 seconds to recover.

if you get a lean out then you need to get to the bottom of that

13.95 1/4 mile on a 2.95 fd. Carnt be that hard to beat!

how much is it leaning out?

a misfire will read as a lean out on a wideband.

Well if I keep me foot down to the boards it will lose all power like I run out of fuel but it happens quick so it can easy catch you out as it doesn't do it all the time but I seen the aem earlier start to go lean. My normal was around about 11ish wot then went to 14+ caught it & backed straight off (running rich at wot as iam only 10psi bit more boost will sort that out) Iam thinking either fuel pump or fpr. Iam also unsure if I need to change the std metro turbo fuel lines when upping the boost or is the originals up to the job?