ok, heres how i connected my IAT sensor.



when it's plugged in like this, im getting around 1-2 degrees (Celsius) at idle after the car is warm. when i unplug it, the MAT reads 20-21 degrees (Celsius). would it be better to log this?

by the way, will i damage the car by driving it like this?

 

BUt the screenshots of the datalog shows readings from 1.4 to 15.6°C - which doesn't sound too bad for me for winter time... (@rhysmate - what where the actual outside temps again?)

 

at the moment the outside temp in between -1 Celsius at night and 5 to 6 degrees during the day?

 

So I don't see what is wrong with your readings - with an efficient intercooler your intake temps after the IC won't exceed your outside temp very much...

All 4 screenshots show MAT between 7-8 °C and rising to a max of 15.6°C when going into boost - at ~4-5°C outside temp I would consider this as normal...

Greets

 

Thats a good point. maybe me messing with the connectors changed it? the old logs were showing wierd numbers and after i went at the plugs it changed! cheers Zaphod.. ill do another log tonight and try and use virtual dyno. im curious as to what ballpark im in

 

I'm glad you got it worked out.

 

Cheers man! can't wait for my injectors. boost cut is breaking my ***** and cant be good for the engine :( I was hoping my waste gate would open at 7 psi but it doesnt appear to be. i better set up a regulator on my compressor and see what it opens at

 

I had the same problem i hooked the vacuum lines up wrong to the wastgate and when it hit boost it went round to about 20psi. Wasnt so good for the engine. Air compressor works a treat though

 

I have boost cut set to 7 psi as my duty cycle maxes just over that.

 

Here's a crappy video..

 

Feels better than naturally aspirated, huh?

You can buy a lower psi wastegate actuator on ebay pretty cheap. Just make sure it will bolt to your bracket and has the right rod length.

I changed from an "7psi wastegate" that was giving me 10+psi to a "3psi wastegate" that gives me a solid 7psi. Then I use a Greddy Profec B boost controller to go up from 7. Now I have two settings, 7psi when the controller is off and 10psi when it is on. The controller actually has two settings, so when I build my engine I could actually have three levels. It has proven useful on the track to have the wastegate only setting which is more gentle with boost onset when there is moisture on the racing surface.

 

Its outrageous how different.. its the most fun ive ever had in a car.. as soon as I did my first pull I put the s2000 up for sale.. it just doesnt give me the same buzz..

I have friend with a lot of turbos as he rebuilds them, I might ask him for one.. is table switching easy to set up?

 

By the way, I set up my rev limiter to 6 out of 9 sparks and its really fast.. I set up a spark only cut and got no flames which made me a bit sad

 

Nice man, congrats. Nothing like a turbo miata, i love mine.

 

Finally got my 460 injectors.. what apart from the req fuel do I need to adjust? Im assuming that idle will be funny now?

 

No it should stay as before - if you change your req fuel correctly.

 

It might need a little tweaking but not much. You will want to let VEAL work on the fuel to make up for any irregularities after you get done. And you will likely be tuning a few new cells in the higher KPA regions of your map. Keep doing it incrementally like before.

 

Went tuning last night (in the pissing rain) and got to 159kpa before the wastegate opened. (or so i assume as it climbed no further). i did a datalog but forgot it on my other laptop so ill upload it after work.. The car pulls so well now, but i wouldnt want to do much wet weather driving. it nuts

 

I can't wait till i'm at this point in my build! Hopefully I will be where you are by this time next year!

 

Stretched tires and very little available suspension travel before contact with the bump stops won't help much with maintaining traction. Faster doesn't always look as "cool", but it will be faster. A little bit of sidewall flex is our friend.