Hitting fuel cut on stock tune - Subaru WRX Forum
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#1 Old 12-16-2013, 07:58 AM
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Hitting fuel cut on stock tune

Hey guys. Really new to the WRX scene. I have an '02 WRX with the stock intercooler, stock tdo4, 3" catless exhaust, stock up pipe, 255lb fuel pump, and I am unsure of the injector size... It had a tune on it and then it sat for quite a while. I have a tactrix 2.0, and I flashed a stock map on it. It starts, idles, and drives like butter. But when I go WOT I hit fuel cut. I am unsure if the wastegate had been adjusted or not. All of the vacuum like and plumbing are nice and tight. So if anyone has some insite it would be greatly appreciated.

Thank you team.
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#2 Old 12-16-2013, 08:20 AM
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Why did you go back to a stock tune? Im guessing that's your problem right there. Might I also suggest getting a catless uppipe.

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#3 Old 12-16-2013, 08:24 AM
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The tune that I was running was getting really funky and jerky. The only pro tuner close to me is 2-3 hours away. So I just needed something to suffice until I can get there to get a pro-tune done.
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#4 Old 12-16-2013, 08:30 AM
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the catless up piped is in the very very near future too.. As in friday haha.
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#5 Old 12-16-2013, 08:38 AM
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There's a guy around here that can send you a good tune. Im not going to mention his name though cause he might be too busy or just not want to mess with it or the liability. He knows his stuff though. Im sure he will chime in if he thinks he can help you out. I would for sure get a pro tune or etune on it from a respectable tuner. Good luck brotha .

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#6 Old 12-16-2013, 08:39 AM
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Why make two threads on the same thing?


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#7 Old 12-16-2013, 08:57 AM
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Sorry for making two threads for this. I realized after I made the first one that there was an appropriate place for it. And any help I could get until I get in for a pro-tune would be great!
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#8 Old 12-16-2013, 07:46 PM
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The protune will fix it and we can't help. Taking the other tune off is what screwed you up.
arewmors likes this.

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#9 Old 12-16-2013, 09:36 PM
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he said the tune he had on it was running bad. prob a mechanical problem esp since it was sitting. taking off the tune prob messed it up worse. I had a similar problem with it being jerky, my MAF sensor was dirty.
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#10 Old 12-17-2013, 06:22 AM
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OP, you running a stock BPV?

Also like mentioned earlier, you can't just pull off a tune designed for your car

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#11 Old 12-17-2013, 03:35 PM
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If the car sat for a long period of time, it could have been the gas...Newer fuels contain ethanol and it jells over time and can cause fuel cutting issues because the oct rating is lower ant the ECU sees a lean condition...Then again do I know...

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#12 Old 12-17-2013, 04:56 PM
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Slight misdirection here, psinuse how long does the gelling if ethonal take? Could this cause an injector to become clogged and not function?
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#13 Old 12-17-2013, 05:35 PM
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Gents,

Ethanol-blended fuels - in Canada at least - have a shelf life of over 2 years. Also, it's properties are that it's a cleaner and absorbs water. It also has a 2% lower energy content than conventional fuels when blended at at 10% concentration - which is industry typical.

I have never heard of ethanol-blended fuels gelling. It's just not a risk. I'd seek some other explanation here.

Early experiences with ethanol-blended fuels at marinas were that it got super-saturated with water, and therefore was no longer fit for service.

As a cleaner it could plug up a filter though, if just starting to use ethanol-blended fuels after years of conventional fuel use.

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#14 Old 12-17-2013, 05:36 PM
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Great info Keith! A co-worker of mine has a classic thundebird. He let it sit 5months and had to drain the fuel. When he did it was brown. I originally thought maybe the old fuel tank had something to do with it but, he said he had it cleaned and coated with the restoration . Moral of the story is it don't take long as one would think.

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#15 Old 12-17-2013, 05:40 PM
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So I did some looking around. While I found quite a bit of good info on this, this thread seems to cover a bunch of the basics if "bad fuel".
It's kinda crazy what google and yahoo have to offer.
Almost like they're a search engine of sorts! Wow.
Not hatin on you Haw1s

How long can gasoline sit in a vehicle before it goes "bad"? - Yahoo Answers

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