Christian and Beccy

iTrader: (14)

Hate to be a stick-in-the-mud, but did they really have to have people sitting in the boot of a car that made 370odd at the wheels?? Great power though.

rapidcossie

Did they say why it was runing lean, col?

foreigneRS

did your car only have the people in the boot for the power measurement and not the coast down losses measurement?

i expect that the scooby didn't have anybody sitting on it for it's power run?

col cos1

iTrader: (5)

as said already they were in the boot due to shite back tyres,it only just spun as the turbo came in strong,i could see on the monitor

col cos1

iTrader: (5)

euan it only ran lean between 6500-7500 a small bit,they adjusted fuel pressure slightly but it was still there,this however robbed the power slightly further down and gained a bit top end

and to be honest this isnt what i want,as ive spoke to alan at ava about this and he set my car up the way we thought was best

but as ive been told by both ava and extreme,im at the level where i need a mappable managment to get the best out of it

or i was thinking of getting my car down to msd for a proper mapping session,as im assuming stu can only do his best in writing a chip to what a customer tells him over phone,i might not have been 100% accurate

saying this im fairly sure my greys must be close to maxing out????

and although ive tested my fuel pump and there is 12-14v at it,when the cars at full pelt,id be more confident hard wiring it myself

costina

iTrader: (1)

Did it???

Ta

col cos1

iTrader: (5)

na nobody needed in the 4x4 mate,that things feckin quick through the gears like

foreigneRS

that's what i'm hinting at

as the losses on the scooby were measured with the same friction on the rollers through the tyres as during the power run, the calculated flywheel figure is more likely to be reasonably close to being accurate

Rob M666SCC

Not suprised it had traction problems the way its been strapped down !!!!

foreigneRS

what's wrong with them rob?

afaik, the straps should only be there as a restraint in case something goes wrong and the car tries to climb out of the rollers. they should not be used to pull the rear of the car down into the rollers, as in theory this will give increased friction between tyre and roller. on a sierra though, due to the shit rear suspension, the more the rear suspension is compressed, the less contact patch of the tyre will be on the rollers

Mike Rainbird

iTrader: (3)

It's pointless comparing different rolling roads.... .

However, I will say that the AVA rollers are the only ones that I have ever seen that can provide the same load as the road, so that you get a boost curve identical to what you would see on the road.

If you don't actually get full boost until 4750rpm on the road, that must be HORRIBLE to drive .

I also see you get the usual T4 boost creep above 7000rpm, which would indicate to me that you either need the enlarged wastegate penny (if you don't have it), or for the wastegate to be ported, so that it can bleed off more air to maintain the boost at the required level. This is probably why it is running lean at high rpm... .

NEIL A

iTrader: (6)

Mike i think Alan has modded Colins wastegate already.
Ava is one of the only places that i have seen that loads the car up in stages and holds the revs to get a full load run.
Mike you going to be putting the escort on the rollers? What power did your Saf make at ava?

Lambchop

iTrader: (1)

"only" 395

Mike Rainbird

iTrader: (3)

Well despite the wastegate mods, you can CLEARLY see that the boost is still creeping at high rpm, which would explain the problem with the fuelling leaning off... .

With 3.36 gearing, horrendous ACTs (well into the 50's) as it was the only day in Scotland's weather history that ambient temps hit 25°C and the water injection pumping in water . Unfortunately their cooling system on that day had not yet been fully installed, so was running at half power .

However, at 1.2 bar with PERFECT ACTs (due to the cooling being adequate at this boost level), it made 320bhp @ the wheels, which goes to show how good it might have been with adequate cooling - just ask Alan what he thinks it might have made with ACTs in the low 40s.... .

Lambchop

iTrader: (1)

401?

NEIL A

iTrader: (6)

I think with a turbo as big as a t4 you realy need to be live mapped and have good boost control. I know Alan has a few tricks to help it but can only do so much with an off the shelf chip.
320 atw with 1.2 bar im hoping for a little more than that at 2 bar but im only on a T38.

Mike Rainbird

iTrader: (3)

Will obviously need the boost curve tweeking in the map, which Alan won't be able to do with the standard ECU, as he doesn't have the dongle for the Webber / Pectel stuff....

Needs a stand alone ECU for them to get the best from it.

NEIL A

iTrader: (6)

I think Col is waiting to see how Alan gets on with the new Colins ecu he is trying out in my car. Alan told me a fully mappable ecu is the only way to go to get the most from it, hes just done a T38 escos making 360 atw on autronics (sp)

rapidcossie

AVA rollers tend to pload your car up a wee bit more than you can really ever see on the road.

Only place mine has seen similar loads is on the runway flat out in 5th.

Colin there is 30 bhp in your car if you stop messing about with chips and live maps

rapidcossie

Alan says he still earns interest on the bung that Mike slipped him that day

Mike Rainbird

iTrader: (3)

50p and a half eaten Curly-wurly obviously goes a LONG way in Scotland . Apparantly if I had thrown in a bag of Salt & Vinegar Hola Hoops, he would have run the risk of shutting the National Grid down and upped the power to the fans to enable me to achieve 420 .

rapidcossie

Anything over 400 would have been very good Mike as I know how much we struggled to get more than 410 ATW without changing the exhaust.

col cos1

iTrader: (5)

can say for sure as was 2 diffrent rolling roads before and after,but i know myself the the temps are down

col cos1

iTrader: (5)

mike i dont know if its got the big penny or not,alan defo ported the wastegate a while back,and seemed to have cured it,to a certain degree

as for boost im going to check my other graphs im sure the cams been set up seen full boosdt before this

but no its not horrible to drive,just knock it back into first gear..lol

+i am still running standard head,no porting etc

think i might get it set up again and see whats going on

col cos1

iTrader: (5)

???????????????????????

NEIL A

iTrader: (6)

I was talking to Alan the other week about exhaust back pressure and the figures he was on about were interesting. There doing an exhaust for a car running around 360 atw on a t38 so will be good to see just how much a change it makes. I might go for one later in the year depending on pressure tests and cash flow, wonder what sort of a system Tom could come up with for an escort.

rapidcossie

I made 410 ATW without the exhaust col

Even changing to a magnex would help your car as your car always blows the gas analyser out the exhaust does it not?

that never happened on my magnex.

Just a thought

col cos1

iTrader: (5)

yeah it does euan

ive always thought mongoose are the best?????


mine only has a rear box,its by no means small but

col cos1

iTrader: (5)

euan yours had a good few things up on mine even then mate

autronics
1000cc siemens
heavly worked head

rapidcossie

The head is a flowed and ported CNC one and it works well.

You are not maxing injectors out yet so that aint a limit.

You defo need to get programmable ecu.

pete mcrash

iTrader: (1)

think i'll have a look up to AVA for a power run.......need to get some new leads first and see if it cures my miss............

rapidcossie

If you ever come up pete let me know and ill come say hello

col cos1

iTrader: (5)

aye pete for sure wel get a beer

pete mcrash

iTrader: (1)

think dicko is coming up for a set up in the "not to distant"..........i'll follow....(in front... )

rapidcossie

keep us informed

Mike Rainbird

iTrader: (3)

I thought he was on four greys? If so, he is DEFINITELY maxing these out at this power level!

rapidcossie

4 greys be maxed out @370 ATW at AVA Mike?

NEIL A

iTrader: (6)

I think greys are only good for up to about 450 max Euan so he must be getting close.

JTECH James

iTrader: (13)

I went to rolling road im plymouth with a mate of mine in a STAGE 3 ESCOS, he went on first and made 338bhp, i thought that was spot on, just about right..

i went on in my 4x4 saff with 55lb injectors and a T34.48 and made......














459bhp

WTF

but at least i did win most power of the day

pete mcrash

iTrader: (1)

jtech....................i need to go there...............proper pub talk.........