Tuning Imola finally gets boost 1242 8v mpi turbo info thread

[woj]

looking into it a little more im thinking what does it do better than the det3, the emu is nearly £800 from the uk supplier and for that money theres emerald just up the road from me

EMU has hardly any limits (at least for a 4 cylinder engine), DET, when run in fuel implant mode (what you probably want in the end anyhow) has certain number of inputs and outputs limitations. You would have to read the doc to see what it is, I do not remember (something like not being able to have map switch, half-sequential injection, and EBC options all at the same time). Read the manual through. DET is certainly easier to set up (looming wise and mapping wise).

But, I am only reporting what I read elsewhere (both DET and EMU are very popular on PL speaking forums as you can imagine, but it is not my kind of thing really).

 

[craigb244]

Value for money Id still say megasquirt.
All theses manufactured ecus are one size fits all. They are all built and designed for a cost and to make profit.

Megasquirt is a open source community project so will always work with the original sensors and will always have unbeatable support which alone is worth more then any other ecu! When ever I've had problems I have literally uploaded a dump of the ecu and a few details and got a answer Within minutes!

 

[Razman]

I also plan to place a 1l swirl pot

That's not really what they're for, and I haven't heard of any track day centos having fuel starvation problems, so for a road car, I wouldn't bother.

A walbro ITP050 should be more than enough, and it should drop straight into the original tank.

 

[Lecook]

Value for money Id still say megasquirt.
All theses manufactured ecus are one size fits all. They are all built and designed for a cost and to make profit.

Megasquirt is a open source community project so will always work with the original sensors and will always have unbeatable support which alone is worth more then any other ecu! When ever I've had problems I have literally uploaded a dump of the ecu and a few details and got a answer Within minutes!

Hmm this is also why the megasquirt is a stong contender.. Im not really in any rush to make a decision as the engine needs putting together yet.. it would kind of be ideal as its cheap, theyres a huge community, alot of tuners are familiar with tuning it and its been tried and tested, Craig, How did you find the whole loom building side of things?? Also programing the sensors and getting it to fire for the first time??

Ive also decided im going to steal the dvs (double valve springs) from the 16v head thats on my 1.4 16v engine for the build as ive read they fit the 8v for no other reason then the fact i can lol

 

[craigb244]

I found the wiring and set up easy... But then I am an automotive electronics engineer lol

 

[Lecook]

So heres a few of the bits I picked up today

And to finish.. a brand new header tank

 

[fingers99]

That's one huge intercooler!

 

[Lecook]

That's one huge intercooler!

That is indeed.. im determind to make it fit but I may have to downsize..

 

[Lecook]

Im now after a pair of flanges for both turbos the gt1544 and the gt15

Garrett Gt1544

As you can see its currently welded to the manifold.. I have a spare manifold...... and a grinder :devil: :devil: :devil: so I may see if I can cut it off and get the right flange for the job as there is some movement in the bearing however doesnt catch the housing.... or..


Garrett Gt15

This has less movement on the shaft but has different compressor and exhaust housings that seem smaller :s also the wastegate actuator seems to have stuck open.. any clues?? Is it dead lol

If anyone knows where I can buy the flanges off the shelf then it would be much appreciated..

Ive heard that the downpipe flange needs machining for the wastegate to clear aswell..

All suggestions and advice much aprreciated

Cheers

Lee

 

[craigb244]

Wow messy! You'll probably find one is a "G" turbo and the other "GT"

All turbos have play. As long as the compressor or turbine don't contact the housing then they are fine

There should be no noticeable thrust play (in/out play)

 

[Lecook]

Wow messy! You'll probably find one is a "G" turbo and the other "GT"

All turbos have play. As long as the compressor or turbine don't contact the housing then they are fine

There should be no noticeable thrust play (in/out play)

Yes messy lol.. and far from Ideal but it all came at a bargain price so I wasnt over fussy lol besides its nothing a grinder and a few mins wont sort lol however I will need a flange to have welded to the new manifold


Theres no thrust movement in either and your right.. the spare is a t15 and the one on the manifold is a gt1544

the other option may be to swap the housings if thats possible?? Or would the shaft then need to be rebalanced or are they two totally different turbos??

Cheers

lee

 

[craigb244]

You will need to look.

Garrett balance the compressor on its own and the turbine is balanced just with the nut. So if you strip them just mark the end of the turbine shaft and nut and just be sure they line up when you rebuild it

 

[fingers99]

See how you get on with what you've got.

My best guess (big boost spike, quick spool up, boost pretty much tails off before red line) is that the GT15 is just too small. An electronic boost controller will enable you to mitigate the effects, but GT17 (some diesel Alfas, JTDs, etc) or a hybrid is probably the way to go.

 

[craigb244]

Mine is a gt1752 from a petrol Saab 9/5 (not aero)
Brilliant turbo for a small engine but imho the 8v won't flow well enough for it

 

[Lecook]

I think I will settle with what ive got for now.. apparently it was run a 1.7bar of boost before on the old spi engine but im planning of around 1bar -1.2bar... maybe if figures are still looking good when I get to the rr it might go a little higher... I did consider the gt17 however thatll need a ported/flowed head at the very least

im going to see how it goes with this turbo though.. being as itll be my first petrol turbo and I have a distinct lack of knowlage although im learning little bits slowly and from what ive seen on here the last 2 and a half years theres always someone willing to give advice or direction.. which I really do appreciate guys

cheers again

lee

 

[craigb244]

1.7 is way to much. Everyone with these turbos run a lot of boost which is just trying to get around the fact it runs out of poof at high rpm.

I've been thru all this running lots of hybrids but it's simply to small.

Not saying it's bad. It's a very good turbo and comes in very quickly so it's easy to drive, it just hits a brick wall just as things start getting good

 

[Lecook]

1.7 is way to much. Everyone with these turbos run a lot of boost which is just trying to get around the fact it runs out of poof at high rpm.

I've been thru all this running lots of hybrids but it's simply to small.

Not saying it's bad. It's a very good turbo and comes in very quickly so it's easy to drive, it just hits a brick wall just as things start getting good

Dont pee on my bonfire already

Aslong as it goes better then my 16v ill be happy.. if not ill have to invest in a bigger turbo lmao

as said im planning of having it run at 1.2 bar max and im pretty convinced im gonna go with megasquirt so thats a start lol

Plenty more bits to collect yet though.. I need to invest in a 3bar map sensor and sort out some injectors

lee

 

[craigb244]

You don't need a map sensor if you go megasquirt?

 

[Lecook]

You don't need a map sensor if you go megasquirt?

I assume theres one built in then or is it totally removed??

 

[fingers99]

Jasons car uses some kind of GT17 hybrid. 170+ bhp (with water/methanol injection).

I think he still has the car (although he's generally crawling under Volvos).

Still waiting for my test drive!