swissfc

Hi guys.


I've been using the resources from this forum for many years now. I never needed to join up because all the questions had already been asked and answered.. until now. I've searched with every keyword combo i could think of but haven't found anything that relates to my question. If that is my fault I apologize sincerely.

I relocated to Switzerland a few years back and bought myself a very tidy unmolested FC over here when the opportunity arose. Its my fourth FC but coming from New Zealand I have never owned one that resembled anything like stock.

The factory performance leaves a bit to be desired when you're accustomed to Kiwi spec rotaries so I've set about livening it up a bit.

Here is where I've hit the wall a bit and would appreciate some input from the wise heads on here. In NZ the first things that goes in the bin are all the support systems, ECU, turbo, intercooler and exhaust. In Switzerland that's all illegal.

So far in the name of stealth I have installed some 900cc injectors, a FPR, Innovate MTXL, 044 in the tank and an Adaptronic PNP. A stage 3 BNR will be underway once i get the S5 core I bought from NZ shipped to the states. For all intents and purposes the engine bay appears stock and needs to stay that way.

The factory cat has to stay but I've found a place that will open it up and replace it with a 200c for me, and I have found a Cat back that i should be able to get legal. The airpump has to remain and this is where my question arises. Has anyone got the ACV working satisfactorily on a standalone and if so what logic did you use to operate it. ie Is it as simple as creating a load vs rpm table and using that to control the ACV solenoid.

Thanks in advance for your time and advice.


Dale.

j9fd3s

iTrader: (3)

keeping the ACV is fundamentally simple, you just need two outputs to drive the solenoids. Mazda used an Rpm AND throttle position strategy, which most aftermarket ECU's can't do, but you could use either one and it would be ok.

the ACV "maps" are in here http://foxed.ca/rx7manual/manuals/Tr...ol_Systems.pdf

keep in mind "Port Air" runs way cleaner, but it also throws off the O2 readings, so you may need to play with that

swissfc

Thanks for that. Really helpful actually. I didn't realize the solenoid operation strategies were already nicely presented like that in the manual. The Adaptronic has two separate load vs rpm tables for VVT control which I clearly don't need. I might be able to set these up to operate the solenoids. Ill need to sit down and have a proper think about it, but I cant immediately think of a reason why it wouldn't work.
I've never needed to think about things like this before but the emissions laws are incredibly strict over here. At the moment I have knocking sounds in the exhaust when its hot which I assume to be a bit of post combustion even though the AFR is sitting around 13:1.
With the ACV Solenoid disconnected the diagram shows that the air pump is just pumping straight to the relief so that shouldn't be effecting my AFR. I need to get the exhaust and turbo sorted and then get in on the dyno for a proper look I think.

j9fd3s

iTrader: (3)

off the top i'm not sure which way the air goes with nothing hooked up, but its really easy to figure out. the valve comes apart really easily.

i know the Germans were picky about noise, are the Swiss?