Si.G's NA6

Si.G · Postby **Si.G** » Wed Nov 06, 2013 12:25 am

Okibi wrote:I have some toyota COPs if you need.

I now have COPs - sweeeeeeet.

Si.G · Postby **Si.G** » Wed Nov 06, 2013 7:48 pm

the coils from dave have solved my problems as expected and I am booked in with evolution R on Saturday morning to finish the tune

kenson · Postby **kenson** » Wed Nov 06, 2013 11:45 pm

Nice work Si.G! Hopefully we see you on Sunday

Si.G · Postby **Si.G** » Wed Nov 06, 2013 11:52 pm

Si.G wrote:the coils from dave have solved my problems as expected and I am booked in with evolution R on Saturday morning to finish the tune

Noooooooooooooooooooooooo

I went for a longer drive just to be sure everything was ok and I still have miss fires, not as bad, it is not revving smoothly :twisted:

Postby **NitroDann** » Thu Nov 07, 2013 12:23 am

It may or may not be a spark plug thing, gee that reminds me I have to answer a PM !

Dann

sailaholic · Postby **sailaholic** » Thu Nov 07, 2013 6:50 am

Have you considered just re calibrating the wideband you have?

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Si.G · Postby **Si.G** » Thu Nov 07, 2013 11:39 pm

Si.G wrote:
Si.G wrote:the coils from dave have solved my problems as expected and I am booked in with evolution R on Saturday morning to finish the tune

Noooooooooooooooooooooooo

I went for a longer drive just to be sure everything was ok and I still have miss fires, not as bad, it is not revving smoothly

Firmware upgraded fixed the issue - big thanks to gslender - He is the man :!:

Si.G · Postby **Si.G** » Thu Nov 07, 2013 11:46 pm

sailaholic wrote:Have you considered just re calibrating the wideband you have?

I did a free air calibration less than 100km ago when I installed the zorst. What I have done is re-calibrated the wideband in turner studio to match what I was seeing at the dyno. The gauge is reading completely different - I need to change the wideband controller setting to sort that. So hopefully, I should be able to use some auto tune again.

The big question is which one to believe - given my car drives so much better tuned to the dyno one, I am going with that. Also, I am sure it is a much more expensive bit of kit, not that always equals quality.

Postby **Okibi** » Fri Nov 08, 2013 12:13 am

Si.G wrote:...Firmware upgraded fixed the issue - big thanks to gslender - He is the man

This is great news!

Si.G · Postby **Si.G** » Mon Nov 11, 2013 1:22 am

So the tuning roller coaster ride continues today.

I get in the car to drive to the club autotest and it is running not so good, but it never really does when cold. Still not feeling very solid once warm either. I take it pretty easy on the first 2 runs and it is hesitating and miss firing every now and again - this is not good. I must have done around 40 WOT dyno pulls on saturday and no issues at all. Lining up for the 3rd and the engine will not even free rev cleanly. Here is the fix to the problem....

That's right it is the water temp sensor. The clip is broken and it was hanging off. This was causing the ECU to think that it was -18 deg C and hence it was dumping loads of fuel in for warm up enrichments, so the miss fire was from an excessively rich mixture. I noticed this when I hook up my phone to the ecu to get the output data. I jump out quickly, push the clip back on and the next run is trouble free and the car is pulling nice and strong. I still did not give it full throttle and I did short shift a bit. I built up to giving it the full beans on the last run, here is the result - it is a new experience - getting wheel spin in 3rd gear in an MX5. (quality is a bit naff)

Here is the dyno graph from saturday - notice the bumpy torque curve. I did not have time to sort out close loop boost control, so the boost is a bit inconsistent. I had less time than arranged, so I had to priorities. There is a boost spike right about 3800rpm.

Basically made 190rwhp / 167ftlb torque at 8-9psi of boost. When I have time and I have sorted the close loop boost control, I will probably get back to the dyno and tune it to 220rwhp - that will be enough and safe.

Si

Postby **Okibi** » Mon Nov 11, 2013 2:12 am

Congrats on an easy fix Simon. Looking forward to seeing/hearing it being dríven in anger, video looks good.

Si.G · Postby **Si.G** » Sun Nov 24, 2013 11:02 pm

With an increase in power comes an increase in stopping power - well to be safe anyway. There will be people who will want to say that 4-pots are over kill, but I have gone in this direction for a couple of reasons. One of the things I require from a motorsport car is that (tyres permitting) you can do lap after lap on a track without worrying too much about cooking the brakes or killing the engine. I have dríven too many cars on the track where it is one hot lap followed by 2 cooling laps - you just can't get into the groove. Secondly, when you look at the price of getting the Nb bigger brakes, it is not that much more to go this way.

You will have noticed that they are not the standard kit dynolite forged calipers, they are dynapro ones with dust seals (as mentioned before)

They are a bit bigger then the NA6 ones

I think I have gained about 5mm track as well because of the thickness for the hats. On the un sprung weight front, I think they are about the same, wilwoods my be a little lighter - that was measured with the deadly accurate, pick stuff up and compare it method.

Next is the back brakes - an upgrade to 11" rotors.

Si.

mr bender · Postby **mr bender** » Mon Nov 25, 2013 12:03 am

great upgrade.
mine have saved my life a few times now.

are you just using the wilwood pads?
did you get the kit from the US?

Si.G · Postby **Si.G** » Mon Nov 25, 2013 1:17 am

mr bender wrote:are you just using the wilwood pads?
did you get the kit from the US?

Yeah using the wilwood pads at the moment and yes from the US. I am sure there are better pads out there. One of the down sides of the dynapro is that you cannot get as many pads for them. My favorite pad is Ferodo DS3000 - had them in my APs on my Rally car in the UK - amazing pad, but you cannot get them for the dynopro, but there are plenty of other good pads available.