Vadim's13

Hey guys. Well long story short, I finished building my ka and now time to tune it. Local guy has never tuned series 2 before but has done other sistems. So the problem im having is that i can drive the car normally like under 30% of throttle. Or with no load(boost) but if I give it more gas it starts to brake up. To me it sounds like miss fire. It normally happens around 4k rpm but if I go up a hill it creates boost earlier and does it again... idk how to explain it may be ill take a video tomorrow..
Im not very good with electronics and my tuner cant figure out why its doing it.. may be its a tune maybe a mechanical problem..
So maybe some one could send me thair map thats close to my set up and we could play with it and see if my tuner didnt set ignition right?!
So here is my set up
Ka24de
Crower stage 4 cams and springs
Ported head +1mm valves
3 bar map and air temp sensor
Ls1 coil packs from a truck...
Bkr7e plugs tried defferent gaps act pretty much the same. .

Ive tried new distributor new coils..
Well im sure u guys would like more info. I just cant think what u could need.. so plz ask me!

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Vadim's13

Any one??

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Vadim's13

To the top!! Come on guys

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Fatboy Garage

Sounds like a boost cut, I had the same problem when I was getting on KA tuned on EMS 2. Its under the advanced area. Unfortunately I don't have my laptop on me to tell you exactly where to go, good luck!

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anti tyler

it's not a mechanical problem at all, it's a tune issue. I've had this issue with both of my KA's. break up under boost at around 4-4500k. Either the guy tuning your car isn't doing it right. (AIR to Fuel) or he doesn't have the right gear to know how to tune it right.

Stop replacing things and I highly suggest learning the EMS yourself, that way you can have a bit of knowledge on how exactly to tweak these issues.

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Vadim's13

Thanks every body for your input!! I really appreciate it.
I will play with it my self for now. And and save $ for a real tuner. Hopefully next month haha
But ill kerp it updated ones I find thd ptoblem. May be it can help others ;-)
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d_nice

yea let us know how it works out for you

Vadim's13

So,a lil update.
I spent sunday setting up all brake points and some other stuff.
(I found a video on YouTube. Its like 14 videos on how to tune ems V2)
So car starts and idles really good now. Still have the same problem at higher load.
So next im gonna try to play with fuel and timing.. ugh im scared lol
Any tips on fuel and timing? Btw what max knock volts can I safely see? I know best is 0 but just so If I see some I would know to take away the timing.

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Vadim's13

Here is the link to the videos if any one interested. Guy knows what he is doing

https://www.youtube.com/watch?v=iGRP...e_gdata_player

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Vadim's13

Last up date. Car runs fine now. Going to tune her first of next month.. :-)

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