Big turbo/fueling/mapping?

[Prawny]

hmmmmmmmmmm, if it's wired into TPS as well then it might not be so bad, I've not seen boost controllers wired up to TPS as well, but be pretty complex setting it up to deliver boost smoothly.

usually boost controllers are great at controlling peak boost, but do nothing for part throttle, so on a big turbo they're constantly trying to spool up to full boost as nothing is stopping it.

Having a TPS input could well fix this issue, although to be perfectly honest, if it's being mapped by someone competent then it's still not really needed, using the N75 gives the ECU full control over boost in all conditions, as well as the ability to cut boost if something goes wrong, which of course you can't do with the EbC.

[jonrandom]

Its a HKS EVC 6 and yes its seems seriously complex the manuel is about 1cm thick! I dont understand most of it yet and it take some time setting up with lots of fiddling and reading.

I got it really so that once its mapped I didnt have to run and max all the time. Will be taking to Rtech so think then im just going to plumb the N75 back in and leave it like that for mapping. One less thing to go wrong.

 

[Prawny]

What about wiring in an N75 switch?

I had exactly the same thoughts as you when I did my build, and I spent £200 on a gizzmo MS-IBC and wired that in.

I gave Niki the option of using that or the N75, and he tried the boost controller, but said that on the road it just didn't feel right on part throttle, strangely also, even when set to 0 duty cycle, the boost level still remained slightly above actuator pressure so you couldn't get power as low as you wanted.

On something like a td05 I'd guess you've got a fairly strong actuator, you may find that actuator pressure still makes pretty impressive figures and is nice and tame to drive for more normal use.

I wired a switch into my N75 and installed it on the dash here:



With the circuit broken the N75 valve remains open and the car runs on actuator pressure, which in my case is 15psi. With the switch on the N75 controls boost as normal and the car runs 21psi

Difference in power curves can be seen here:



It's insanely smooth on actuator pressure, yet still really quick.

[jonrandom]

Thats not a bad idea I like it, will defo do that if I can't get the EBC working. Yeah I've got a forge actuator with a spring kit for whatever one is needed in mapping, so guessing ill get pretty similar differences in maps like yours.

Well will try to get the EBC working and Nikki can always swap back to the N75 if it wont work.

Ordering the innovate tomorrow so hopefully that will help then lots of reading about EBC and tinkering.

[Wazzzer]

Nick which wire on the N75 valve did you connect the switch to? Just bought a "wife" switch for mine lol

[rio_gti]

Nick which wire on the N75 valve did you connect the switch to? Just bought a "wife" switch for mine lol

Haaaaaa

[Prawny]

Nick which wire on the N75 valve did you connect the switch to? Just bought a "wife" switch for mine lol

Either mate, it doesn't matter which, as you're just trying to break the circuit.

Well worth doing. On a ko3s it takes you back to about 150bhp

[asboGTI]

Nick which wire on the N75 valve did you connect the switch to? Just bought a "wife" switch for mine lol

Either mate, it doesn't matter which, as you're just trying to break the circuit.

Well worth doing. On a ko3s it takes you back to about 150bhp

Sorry to rob this quick but prawn you got a link to your build thread

[Prawny]

Orange link in my sig mate, also found here: http://www.audi-sport.net/vb/a3-s3-forum-8l-chassis/109831-prawn-bigals-a3-track-car.html

Might take you a while though! it's a bit long!

[asboGTI]

better than sittiing on lunch doing nothhing