If you have a camera take some footage that you could upload to youtube, and i will take a look for you.

If you don't have a CEL, or your maf isn't bad then it sounds like normal.

 

That almost sounds like you clutch is slipping

 

Anytime there is any electronic problem the SST will appear like it's slipping.

 

Sorry, forgot to mention it's stock parts, nothing has been altered on it.

boostsaves: I'll see if I can record the RPM needle this evening as I'm driivng and get it posted for you to take a look at. I'm just going mad trying to recall if it's always done it... I'm a picky bugger with new purchases so I'd imagine I would have noticed!

hollywood_X: Slipping? I hear the term a lot but I wouldn't be able to tell you if it was! This is my first auto gearbox, coming from a manual it's all a bit weird!

Thanks to all for taking the time to respond.

 

paging gunzo.. he's really good, im not saying others are not. vidz is a must to see.

 

Yup the SST trans can do that. I have many logs of this with the RPM not following a linear ramp up. It starts doing it when it gets really hot (like after a bunch of dyno pulls) or depending on the power ramp on.

It's the clutch disks engaging/disengaging.

I haven't really seen it with normal driving.

 

Interested subscribed. Would like to see video also.

 

Ok, my first attempt at a Youtube upload and first video with my iPhone 3GS, be gentle!

 

^looks normal to me

 

So I assume that the throttle position was consistent, and the problem here is that the RPM goes up and stops then goes up again?

 

Should have explained, yes my foot is on the throttle in the same position and the RPMs don't smoothly go up. Cheers

 

That IS odd...I have never had that problem happened to me, at least I haven't observed such a problem. I am sure gunzo can chime in.

 

i compare it to the other videos, and your right it's going up but choppy, installment. try doing it a bit harder. from 2000rpm to 3000rpm. it chops 5 times. wait for gunzo to chime it. what gas did you use. make sure you did not use a lower octane.what are the upgared part of fq 300 comapre to stockers. like do you have hks drop in filters?

your.

others.

 

i compare it to the other videos, and your right it's going up but choppy, installment. try doing it a bit harder. from 2000rpm to 3000rpm. it chops 5 times. wait for gunzo to chime it. what gas did you use. make sure you did not use a lower octane.what are the upgared part of fq 300 comapre to stockers. like do you have hks drop in filters?

Even pushing harder the acceleration is uneven, on motorway slip roads it's quite irritating. I use Shell V-Power (99 oct) and I haven't performed any upgrades from the stock parts (standard GSR SST FQ-300).

 

it quite possibly could be the quality of gas. you did mention that you noticed it on your travels.. did you notice it right after fueling up somewhere new?

 

how about those fuel realy issues, map sensor. the dealer shouls fix this. it's not normal. mine is a blast once it gets to 2nd gear all the way up. now go back to any dealer drive it with them and then drive another sst to compare. goodluck. call the coorporate too.

 

on2it: I've only ever put Shell V-Power into the car and it's been like this for a few weeks now, I would have thought a bad batch of petrol would have flushed through my now (unless it's broke something along the way!)

Both dealers I've taken it to (dealer network around my area is shocking) have stated it's as it should be, however I'm not convinced due to me not noticing it when I first bought it (I'm a picky sod so I would of!). One of the engineers stated he'd taken two SSTs out (mine and another) and they 'seemed' the same but couldn't confirm until he hooked it to the computer (which was broken). However, I wasn't too impressed when he came flying into the garage car park tyres screeching... Nobody seems interested in letting me drive another SST to compare to mine either since they see nothing wrong.

ak47m203: You mention to call corporate? In what way?

 

ak47m203: You mention to call corporate? In what way?

Look in the owners manual for a phone number to mitsubishi customer service

 

irmerm: Cheers, I thought there might have been a secret number or something

 

This is how my car and probably most of the SSTs accelerate ..



You're not the only one that has this issue ..

I've seen this .. hunting rpms when you're cruising .. jerking all the way when you're accelerating .. rpm goes up fast but speeds never go up as fat etc ..

Do this test for me please .. select SSport and see if you have this same issue ??

if it goes away it can be fixed .. but something is wrong to warrant a software fix ..

Check the map sensor and the airflow sensor (clean it if you need) .. these 2 are usually the biggest culplrits

 

My word, S-Sport mode gets rid of the issue in full auto and semi-auto modes!

Thank you SO much! So how can the problem be fixed? Is it sensor related like you mention, or software?

 

Sensors .. I hope
use this to prove to the dealer there is something wrong with the car .. you're welcome to use my vid to prove to them too

SSport gets rid of alot of these issues because SSport doesn't slip the clutches in gently .. it just engages

Sensors because the engine has to go to a pre determine torque/power as the clutches gently engages in other modes .. once these sensors go out of whack .. this is what you get

My worry is damaged clutches, springs or clogged valvebodies can also have similiar symptoms

Change the SST filter to see if it improves the situation if the sensor suggestion doesn't work ..

 

Thank you for your help. A decent dealer is now looking into the issue with your advice and hopefully I'll have a 100% healthy Evo X again!

Cheers.

 

great advice as usual Gunzo!

 

Thank you for all of your help!

 

Ok, after many sleepless nights wondering whether to keep the car or not I decided to attempt to try and get the problem sorted, it's a great car otherwise.

I eventually ended up with Mitsubishi UK involved (TSR case opened) and a reasonably local garage took my vehicle and investigated the problem. They referred it to Mitsubishi UK and they decided they wanted the ECU packing up and sending to them for reflashing or something along those lines it seems.

Well, a week later and I finally pick the car up and guess what, it's exactly the same! They don't seem interested in the items gunzo mentioned as possible problem areas and so I'm now left exactly where I was, minus several days annual leave, a shed load of petrol money going back and forth and 70 pounds in hire care insurance charges. I know Evo's are expensive to run but this is taking the ****!

What I'd love to know, from people who haven't had their spirit crushed by crap customer service, is have I basically bought a lemon of a car and should I get rid as quickly as possible? Or should I persist with the dealer or Mitsubishi to get this sorted?

I'm just getting a gut feeling this isn't meant to be...

 

That's just weird...

But it accelerates as normal?

 

It accelerates, but instead of smoothly raising it ramps up in stages, spurt of acceleration, wait a moment, bit more, etc. As gunzo got me to test, it only does it in Normal and Sport modes, no nonsense in S-Sport.

A shame none of the garages are entertaining gunzo's suggestions, I'm pretty much certain he's right...

 

I have this feeling that once I start modding my MR me and Gunzo will be messaging a lot, most likely he'll end up with some of my green due to help/tuning/software purposes haha

 

ikaney, I will see if my car does this on the way home. So far I didn't notice any acceleration problems in normal or sport mode. Have you tried a Cobb App to see if the problem persists? What did you drive before the X?