Ze de hybrid

[craigmx]

This weekend im swapping my de cams & intake manifold for ze parts and upgrading the injectors(providing everything is back from the powdercoaters),im pretty sure ive got everything i need but was just wondering if there are any modifications im going to need to make eg. EGR, ive done alot of reading up through the forums and everything seems pretty straight forward but just want to make sure
Any input would be great.

Cheers
Craig

[windy_mx6]

To make the most of the IM/Throttle body you are going to need a JE50 VAF and the ECU. A JE50 Vaf can be found on the V6 mx-3 if you havent got one but I would suggest the ECU is a must to go with the VRIS/IM. I could be wrong tho, havent done one myself, just read a lot about conversions.

ZE hybrids are a popular mod but you should really go the whole hog and do it properly.

[windy_mx6]

Dont know if you've read this but Cruisemad had a hybrid and wrote this bible.

J-Spec stuff
ECU and Vaf
The easiest thing to fit off the J-Spec engine to a UK car is the Vaf unit (or one off an mx3 v6) and the ecu. This is like giving yourself a chipped ecu. It is possible to fit either ecu (manual or auto) to a manual uk car but if you are fitting it to an auto you need one from an auto. These are rather rare. They have different VRIS opening stages and the rev limiter is set higher. It also doesnt have any control for the egr valve so this will stay closed. But thats a good thing as you loose power when its working anyway.

J-Spec Inlet manifold (Heads and Cams)
You can fit the J-Spec inlet manifold to the uk engine but be prepared to have to port the head a bit to get the inlet ports to match. If at all possible get a set of j-spec heads and cams. The j-spec heads have better ports and flow and also have larger inlet lifters and valve springs. The J-Spec cams are also different. The exhaust cams are exactly the same but the inlet are higher lift and have a longer duration helping your motor breathe.

[craigmx]

Cheers windy,ive got a remapped kl03 ecu to run it at its potential and pheno spacers to port match the IM to the heads so think ive pretty much sorted everything,was going to do a full swap but ive now decided to fit a turbo but thats going to be a project for next year

[windy_mx6]

This might need to be moved to the correct forum section as it contains no pics/vids

[windy_mx6]

Are you sure its remapped? You will be losing out if not, especially if you dont have the VAF

I found this

If you get the ZE intake installed you can get the KL31 or KL36 ECU and the JE50 Maf and that will help boost the power by about 10 HP you can also get an Eprom to convert your KLde ECU to the fuel map and vris points on the KLZE.

Is yours a re-chip with a Probinator/Eprom?

[craigmx]

I bought the eprom chip and had a friend who deals with remapping fit it for me so it should be fine

[windy_mx6]

are you keeping the Kl-02 vaf or swapping for a JE50 j-spec one?

[craigmx]

well ive got both but on some forums they say you need to use the kl02 vaf with the remapped ecu?

[windy_mx6]

Bit of a grey area.

Its common for people who do a full KLZE swap to then remap a UK ecu and keep the UK kl-02 VAF. The reason for this is that the kl31/36 KLZE ecu's have the 110mph speed limiter but the UK doesnt.

Problem is that a kl31/36 ecu wont run on a kl-02 vaf and theres no reason to do that anyway as the kl-02 isnt as efficient for airflow as the je-50.

Basically, the options you have are

KL31 or 36 Ecu and JE-50 vaf (full power but 110mph limiter)

KL05 UK Ecu and je-50 vaf (unmapped, different vris/fuelling, better vaf/air flow)

KL05 remapped and kl-02 vaf (no limiters, correct vris/fuel but restricted airflow from vaf)

KL05 remapped and JE-50 vaf (no limiters and correct fuelling/vris, possibly better than KL31/36)

Megasquirt with JE-50 (total control over fuelling etc, seperate ecu.

If you have the je-50 I would fit it. You basically want a complete ZE top end swap but keep the compression of the UK pistons for boosting later.

A remapped may not run correctly with the kl-02 vaf after its been "tweeked" to run a ZE.

Let us know how you get on, i'll be interested to hear what the results are like. Are you rolling roading it before/after? I recommend it highly. My mate had a half hour session in Northants and came out with a 7bhp increase on a 205gti from setting up the airflow meter correctly and repositioning the induction kit. Drove like a dream. Money well spent.

[windy_mx6]

Looking around, a lot of people who have done a complete ZE swap seem happy with a remapped ecu and kl-02 vaf so that may be the way to go.

At least you have both so you can try them and see.

[craigmx]

I dont think im going to have enough time to get on a rolling road before i get started but i definately will after the swap,it'll be interesting to see what results ill get