ITBs

Really interesting list dickie, I'd be interested to see a thread on the car, certainly sounds like a good deal of times been spent on it.

Is there a reason you've stuck with the stock manifold from the mk2.5? I think I've read Quinn's thread multiple times now!

The Mongrel now has its first ever Mot Test pass ( On the Chassis Number )
I was a good boy and only drove directly to the Garage and straight home afterwards. I decided a detour was not worth the risk with no number plates on the car.
And an induction Howl to Die for.
The engine is a bit boggy below 2500 rpm but once above 3000 rpm it is really sweet and super responsive.
I did a naughty 7000 Rpm in first gear.
The Mongerel Howls at those revs I might just have broken the 30 MPH speed limit
I now have the game of sending a huge document file to DVLA to get the registration number assigned and a V5 issued.
If I am lucky I will be able to have a proper drive in early July.
The engine feels a lot more willing than the Stock RS.

Hi Folks,
The Mongrel has now been out and about a bit including a Sprint at Perranporth Airfield.
I have found a couple of hiccups along the way.
When the engine is very hot in traffic the nixture has leaned out to the point of missfiring, luckily it recoveres once you give it of bit of throttle.
It also has a lean running problem at 30 MPH on almost closed throttle, again a little blip brings it back to normal.
On friday on the way home from work the mixture went so rich that I pulled of into a layby and was dangerous to drive. I switched of and called the RAC.
After 15 mins I started up and left it tickover the mixture was fine at tickover so I left it running, as the Nice RAC man arrived and had chat and look under the bonnet it had cleared itself enough to be able to drive home followed by the RAC man.
I connected the laptop and could not find anything wrong.
I decided to remove the slow running control set and re tune the tickover without it, I managed to get a smooth tickover at 900RPM, the engine will run down to 500 RPM but at those revs it is outside the set tickover parameters set into the ecu, I adjusted the slow running screw to get the revs within 25 RPM of the value set in the ecu. I then shut the bonnet and let the engine get very hot on tickover with the lights and fan on. Tickover was still smooth with an IAT of 60c engine temp 89c
The mixture seemed to be stable, I will take it to work again on Monday with the laptop connected to take a log.
It might have to take a trip back to the rolling road !!!

Hi Rich,
The servo comes from the runner on cylinder no 4 with a non return valve.
The brakes are firmer than the other cars !!
The idle is part controlled by spark scatter.
I am about to remove a bit more of my random plumbing and link the ITBs together as on the Bike they came off.

Hi Folks,
A bit more tinkering, this time with the ME221 ECU parameters.
I have re set the MAP to atmospheric pressure as the tuner seeems to have missed doing that.
On over run it was running far too rich so I have tweeked the cells on the map top line which seems to have ironed that out.
The other problem I had was when it was very hot in traffic the mixture leaned out to the point of miss firing.
I spent quite a while running the engine with the lights and fan on to get it very hot and adjusted the warm up setting to enrichen the mixture when the temp is over 90c with and IAT of 60c so the mixture now stays stable. The transition point for enrichment seems to be around 60c to 80c

I will be doing some Auto tuning during the week to try and improve things a bit more around 30 MPH on 1 percent and less Throttle opening.