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31

Omega General Help / Re: High revs at cold start

« on: 16 October 2018, 06:32:39 »

Idle control valve, I guess it's working fine as there isn't any stall issues and it changes rpms smoothly for example when warming up and it's clean for sure too but you got me thinking that it isn't as tight as it has been. Any fixes or should I get new rubber part for that?

32

Omega General Help / Re: High revs at cold start

« on: 12 October 2018, 22:57:21 »

I use oil in the K&N filter but only the minimum I think. And yes I agree that the K&N filter will probably be bad for the MAF but yeah, it should still last long time.

Yes, I have those oil fume re-circulation pipes blocked on the plenum so no air can rush in.

Would it be that the ECU just can't understand how much and clean air the engine is getting and therefore tries too much and that raises the rpms?

33

Omega General Help / Re: High revs at cold start

« on: 12 October 2018, 13:53:06 »

MAF broke a half year ago, didn't notice difference on those so I think that it isn't.
https://www.omegaowners.com/forum/index.php?topic=141823

Temp sensor (both) changed 3 years ago while head gasket change. So that is low possibility.

Throttle body and all those intake parts, should be very clean as nowdays I have EGR blocked and even oil fumes are going in separate reservoir and from there to open-air by another filter.

Live data would be the first then, It's just that my omega is very hard to read as none of the readers that I have tested haven't worked....

34

Omega General Help / Re: Understeer

« on: 12 October 2018, 13:44:57 »

Does omega change toe when braking or accelerating? Because my race car does go toe out when braking hard and by that I mean front going down.

I have those vertical polys.

35

Omega General Help / Re: Understeer

« on: 12 October 2018, 06:47:25 »

Just to update on car, I changed toe in 0.2mm, camber still 2.2 degree and lifted the rear a bit.
This made the car somehow unstable on corner exit but the understeer stayed pretty much away. (Maybe the higher rear)

Then lowered the car back on where it was and changed the rear tyres to thinner 205. This made the car oversteer very much but as winter is coming it's okay

Maybe could change the camber to 1.1 degree for winter roads. I think the 0.2mm toe in is all around good.

I lower and lift the rear by adjusting the small joint that measures the rear height. I made it adjustable with threaded rod.

36

Omega General Help / High revs at cold start

« on: 12 October 2018, 06:27:27 »

Hey,

I've been postponing this question a bit but now it's the time to ask it 

Car -99 automatic X30XE

I changed my air filter to K&N filter 2 years ago and after that the engine revs anything between 2000-3000rpm depending on temperature when starting it cold.
The K&N filter is similar to the original filter so no modifications have been made. Only that the K&N filter might have better air flow.

In time of 2 years the plenum and other intake parts has been uninstalled many times so I think there isn't any leaks in intake parts as this has been ever since the air filter change.

I'm not even scared of the 2000 but the 3000 is too much? The rpms drop down to ~1100 after 2-3secs and then after 30-60sec to 800 and when fully warmed 450-500. Before the filter change rpms started from 1200-1500.

37

Omega General Help / Re: Understeer

« on: 11 July 2018, 19:49:37 »

I mean 2.2 degree negative camber and it is now measured very precisely. I got to rethink if they really wear so fast   

That 2mm toe in is must have at finnish roads with 235 wide tyres so can't be without it

38

Omega General Help / Re: Understeer

« on: 11 July 2018, 16:22:53 »

Okay so I don't know what had I measured but I had 11mm toe in... Well changed that to 2mm toe in. Tested and it was better but then I changed camber from 1.1 degree to 2.2 degree. Now it goes good. Ofcourse you can make it understeer but now the understeer is correctable with throttle.

And also tested toe out but that made the car jump around on the trails so changed that back.

I'm happy for now but I could buy new suspension parts, might even need to give up with the self leveling.

39

Omega General Help / Re: Understeer

« on: 11 July 2018, 07:48:01 »

Front 42, rear 44 psi.

I'm a race driver but I somehow think Omega is more complex than a tubural frame racing car, maybe the basics are the same but I believe we have exact Omega experts here

It will turn in sharp with high speed but once in corner it starts to understeer. It will also understeer when low speed and full throttle.

I'll get a better angle meter today or tomorrow so then we will have some results 

40

Omega General Help / Re: Understeer

« on: 09 July 2018, 21:01:05 »

About the tyres, what kind of tyres would help?

Less pressure could help too, but that makes the tire wear more on the middle?

41

Omega General Help / Re: Understeer

« on: 09 July 2018, 17:17:42 »

Okay that is good reference 

I think my camber is close to the default but I'll start by re-adjusting those and try to see what that does. If no help, then toe adjust and if it still stays bad I'll do something else

42

Omega General Help / Re: Understeer

« on: 09 July 2018, 16:06:18 »

I have those Elite Intra Alloys 7.5inch wide, tires Kumho 235/45 17'

I have ~2mm toe in as it helped with the car going straight on these shi**y roads that we have in Finland. It was pulling left or right on roads that have bad trails. So I guess I can't fix this if there isn't another way to stop the car jumping from another lane to other 

Camber was hard to measure but the most approx measure was a little over 1°

43

Omega General Help / Re: Understeer

« on: 09 July 2018, 14:26:30 »

Is there other ways, as I hoped for something that could be done by tools. Maybe camber and toes?

Which shocks you suggest? And which bushes?

44

Omega General Help / Re: Heard metallic clink on sharp corner

« on: 09 July 2018, 08:15:19 »

Big vote for broken spring. If there is something broken and any kind of maintenance hasn't been done in a while (If some maintenance something loose?).

45

Omega General Help / Understeer

« on: 09 July 2018, 08:02:05 »

Hellou, how to kill understeer?

Last winter I changed new Bilstein B8 shocks on front, LSD diff, front wishbone bushes and rear subframe(only the big bushes) bushes to poly bushes.

And now as the summer came the car feels much better but there also came this massive understeering....

Also the car has Stock springs front and back and also stock rear air shocks.