More efficient alternative to a 2.1i engine?

[petethefeet]

I would love to fit EFi to the CU engine but struggling to justify it to myself and other half re. the cost saving/better fuel economy/more power.
VWspeed shop do a kit, don't think it is MS.
Any thoughts??

[silverbullet]

Efi on Aircooled is a mare due to inconsistent cylinder temp monitoring. The very reason why VW went watercooled.

[ELVIS]

To go on a gti chap.

Some proper good thread on CGTI and although doesn't give mega improvements (maybe 5 bhp and 5lb/ft) apparently its a different drive and improvements on paper don't reflect seat of pants dyno.

Found a chap to build one for me properly so I am 100% confident/happy.

Speedshop sell DTA. Really good bit of kit. Had it fitted to a 1600tp for my splitty last year. Head temp was taken from a boss/blank on #3, obviously hottest cylinder. Paul is an awesome guy and has a dyno in his garage at home so can map it for you

[AdrianC]

Efi on Aircooled is a mare due to inconsistent cylinder temp monitoring.

The cylinder head temp's not used to affect the fuelling map on MS, though - just to "push the choke in".

The very reason why VW went watercooled.

VW had been fuel injecting (and catalysing) air-cooled flat fours for near-on a decade for the US by the time the WBX came out - and it was another few years before Europe saw injected WBXs.

I really ought to do something with the MS (plus damn near all hardware) that I've got sat in a box... Actually, that's almost the easy bit. The car that it's going on needs to get somewhere considerably nearer the road before I even think about fuelling...

[silverbullet]

Yes, true. But it was very crude FI and you can't really compare it to a modern fully-mapped engine management system like MS. Taking engine temp from the hottest cylinder just shows up the limitations of air cooling: you end up de-rating it's potential performance by fuelling/timing for the poorest-performing cylinder i.e. the one most likely to detonate.
Not a fan of aircold.

[Shaundon]

Theres a guy in norway allready got a 2.1 t25 running megasquirt....

http://www.msextra.com/forums/viewtopic ... 05#p392805

be a good person to ask for some maps to start your tuning with.....

S.

[ELVIS]

In the middle of spec'ing MS for an AGG today, hopefully will be ordered by tonight. VERY VERY VERY experienced/well respected chap who specializes in mk2/mk3 8v/16v golfs.

His threads read like porn

Found some dyno plots (from trusted garage ) of a 2.0l with ported head and mild cam on MS , 140bhp and 145 lb/ft , more importantly torque curve is smoother than Hutches chat up lines

[racebiz]

Theres a guy in norway allready got a 2.1 t25 running megasquirt....

interesting read - and he would appear to be getting a respectable 28mpg for highway cruising.

So are you intending going MS on your DH or get hold of a 2.1 and MS that.

[mrhutch]

, more importantly torque curve is smoother than Hutches chat up lines

I very much doubt that

[silverbullet]

Torque curve flatter than a witches t*t? Or fatter than a Pete Tong playlist (one for the old skool)
145lb.ft is very good for a 2ltr.

[ELVIS]

Torque curve flatter than a witches t*t? Or fatter than a Pete Tong playlist (one for the old skool)
145lb.ft is very good for a 2ltr.

Will try and find the thread chap

[silverbullet]

145lb.ft is a solid 196Nm! Stock ADY makes 170Nm @ 2400 iirc

All old news at IG16 of course... we are so far behind it's laughable

[heretic]

old thread but I always find updates interesting.
interesting power increase.
a lighter foot and tune for economy may??? give some potential for improved economy?

following link . details in last couple of posts

http://forums.kombiclub.com/threads/its ... hal.50249/" onclick="window.open(this.href);return false;

[silverbullet]

That makes for very interesting reading, in so many ways

[what2do]

Good lord, it appears I have a 'de facto intercooler'