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When I installed the MAP-ECU I was also able to tune the fuelling better so that also contributed to the better performance... it might have been the main factor as it's hard to tell when changing 2 things at once but I was pleased with the end result. The engine is internally stock as a rock...

Jibby, about a year ago I removed my MAF and replaced it with 90mm PVC pipe and fitted a MAP-ECU which uses a MAP sensor to calculate load. It only does fuel (not spark as well like most piggybacks would) but I noticed much improved torque at part throttle and more peak power without the MAF...

Twin 2.5" is on the large side for a 4L engine so it it droning? I've got twin 2.25" and Rush extractors and mine sounds fat from idle to redline. This is a small clip accelerating through 2nd gear but I think I shifted about 5500 so it wasn't screaming but you get the idea...

Using both and blending them would be the best option but AFAIK only Autronic and Motec can do that.

Just for discussion, I think there are a lot of advantages with using a MAP based system over TPS for a road car now that I've sorted mine out. For example the drivability and fuel consumption are generally better when cruising on a MAP system. Also and if you use a TPS and it moves even...

Yeah, I'm using an electric vacuum pump - made in switzerland for providing vacuum in electric cars but I'd feel more comfortable with a pump running off the back of the alternator like one from a diesel landcruiser... I'm just running a MAP-ECU at the moment which uses a MAP sensor and...

Beig such a light car that should work well. I'm using a MAP sensor with my ITB setup which was a pain to set up but is great now I've got it sussed. The problem I had with a V8 Soarer with it being so heavy was that 3-4mm ID tubing didn't produce enough vacuum to be effective with the brake...

Looks fat! Those helix couplings are exacty what I need. Out of curiosity, what ID are your vacuum holes? Do you have a brake booster or unassisted?

Thanks! Rob (uzz32soarer) is having problems with the closed loop tuning with his C's supercharger kit so the switch to open loop would probably be the way to go.

I did some more research and found that the SMT6 can either alter the airflow signal OR it can alter the O2 output but not both in the same unit - 2 units would be required so it's a no-go. The SMT7 however can alter both if that's compatible with the 1UZ.

OK you mean sod - let me get my reading glasses out. Not sure I'm the right person to give advice on closed loop tuning though as there are a stack of other guys here far more knowledgable than me. I've started a new thread about this here...

Here are the relevant pages from the SMT6 application notes regarding closed loop tuning. Has anyone had any experience with setting this up? Toys, Weasy you guys have played with the SMT6 haven't you?

I won't say what you look like to me... hehe

The SMT6 can alter the signal from the O2 sensors which means you can alter the closed loop tuning... I haven't looked into it myself though.

Rob, closed loop is when the ECU uses the output of the O2 sensors to decide how much fuel to squirt in and open loop is when it ignores the O2 sensors and uses the fuel table with some modifiers like air/water temp. Open loop only seems to kick in at or close to WOT. However, from my...

Only you would have a spotless supercharger : )

Fantastic concept and shouldn't break the bank. That'd look fat poking through the bonnet of a Soarer : )

Very neat design there Jordy. Looks like you've swapped the cam covers?? Rob, good to see you here! To post pics click "Go Advanced" below.

The SMT6 can alter closed loop fuelling but I haven't looked into this. It's amazing how long the ECU hangs onto closed loop for - you pretty much have to floor it until it goes into open loop however I don't think it's much of a problem with an NA engine. I disconnected the oxygen sensors to...

Nice! Got any photos?