More efficient alternative to a 2.1i engine?

[silverbullet]

"Semi-sequential" injection? What b0ll0x it's either sequential or batch-fire, there's no in-between afaik.

"All maps with one or two dimensional with interpolation as required" if this means what I think they're talking around with fancy BS, then it's scarcely better than Digifant, just with new components not 20-year old ones. MS makes that look like a pocket calculator.

[billy739]

just a thought , are you running standard diameter tyres?
are you also running the correct AAP 2.1 gearbox?


also considering changing the ratios in the box as this can help mpg


anyone tried fitting an injection set up directly from an inline vw motor? cant see why it would be difficult- yes i know it would need remapping or similar

[silverbullet]

It had crossed my mind too, since the Siemens SIMOS (sequential) is now a known quantity, but I don't know if it's remappable. It wouldn't be worth the effort for a non-sequential system, when did seq. come in on VW cars?

[jim potter]

no ME7 as in Bosch ME7 , as found in mk4 golf's , i will have a drive by wire throttle pedal , and full engine / ecu loom, minus the bits i dont need.
obviously going to add a wideband lambda .

There is no point going aftermarket management if you can do it on o/e stuff ( which you can )

im not aware that anyone has done this before, but the worst part will be the wiring , the ecu is relatively easy.

ill be putting in a obd diag port , and flashing the ecu via that .. so lots of logging and flashing .

going to be interesting to see what a 20 year old waterboxer does on modern day management.

[silverbullet]

Certainly will be interesting!

I'd have thought that any modern management system with DBW will be sequential. Should be able to cope as long as the capacity and head valving is similar. A modern 2.0 8v engine ems on an 2.1 flat 4 should be OK, but the proof of the pudding as they say...

I only mention Simos as that's what Sharan ADY's use and they are still cable throttle, so a bit easier to integrate into the T3 afaics.

[icosahedron]

Semi-sequential injection must mean that two injectors are fired at a time as that system only has two drivers.

Will be following this thread with interest.

[jim potter]

siemens stuff is pants .. bosch is the way to go .. ive got adjustable launch and no lift shift on my cupra running the same ecu / loom that ill be using for the camper ..

NOw theres a thought

as i said ill update a new thread as not to steal this one as i go , im sourcing parts at a price i want to pay .. i think the mounting of the coilpacks will be the worst .

does anyone no the standard cc of the 2.1 dj injectors 270cc ?

[billy739]

how about scooby injection setup?

[silverbullet]

The good people at Fuji Heavy Industries changed the spec every couple of years, they call it "kaizen", we call it a pain in the 'arris.

I only mentioned the Siemens as it's slightly more simple to install and enables our 1800kg Shazzer to return nigh-on 40 mpg at a steady 65mph with all 7 seats fitted.

Semi-sequential isn't sequential at all, it's just banked batch-fire. Mid-1980's tech like in a Rover V8 Vitesse.

Just my take on tings

[AdrianC]

Semi-sequential isn't sequential at all, it's just banked batch-fire. Mid-1980's tech like in a Rover V8 Vitesse.

Sure, but given that we're not talking about direct injection, it's still the valve timing that determines when the fuel gets into the cylinder anyway...

[Ian Hulley]

Due to the ridiculous and almost daily rise in petrol prices, I am weighing up the options and was wondering about swapping my 2.1. Injection DJ engine for for a petrol engine which is more efficient. What would be my options and what sort of mpg could I expect?

Just gas it. 30mpg equivalent and if you use it plenty the payback gets quicker.

Simples.

Ian

[centro]

Due to the ridiculous and almost daily rise in petrol prices, I am weighing up the options and was wondering about swapping my 2.1. Injection DJ engine for for a petrol engine which is more efficient. What would be my options and what sort of mpg could I expect?

Just gas it. 30mpg equivalent and if you use it plenty the payback gets quicker.

Simples.

Ian

That's one realistic option. I know Gasure are the guys for the job, but are a fair distancce from me.

Is there anyone who could do a good LPG conversion within a sensible distance from Portsmouth ?

[toomanytoys]

Sequential fi would allow the use of sequential lpg system too.. so its a win win..

[Ian Hulley]

Due to the ridiculous and almost daily rise in petrol prices, I am weighing up the options and was wondering about swapping my 2.1. Injection DJ engine for for a petrol engine which is more efficient. What would be my options and what sort of mpg could I expect?

Just gas it. 30mpg equivalent and if you use it plenty the payback gets quicker.

Simples.

Ian

That's one realistic option. I know Gasure are the guys for the job, but are a fair distancce from me.

Is there anyone who could do a good LPG conversion within a sensible distance from Portsmouth ?

Elite VW are now Gasure agents and can do the job in your neck of the woods.

Ian

[centro]

Cheers Ian. I looked at the calculator on Gasures site. Says it all really!