Fuel economy error - after my first road tune with you my fuel economy jumped from 14l/100km to 19l/100km, on a stock car. During our second meet for a retune you asked how my fuel economy was - I’m glad you did btw - I said it was pretty disappointing. You got a funny look on your face, did something on your laptop, flashed the new tune and my economy dropped to combined 12l/100km. Same hard driving, same roads, same fuel. Seems like a big mistake to me. Or is there a highly technical explanation along the lines that you don't make mistakes?
When I got my tactrix and started logging the car I found knock. Contacted matt. He sent me a revision adding more fuel at the top rev range – to battle ‘the humidity we’re having’ – a total bs reason as any tuner or mechanic will know. And matt if you say that’s a legit reason – why didn’t you give me a tune that was already designed for hot, humid, any other weather? Seems a bit unsafe then.
Two revisions later – matt said that maybe I had a dirty maf.
You can’t say the sensor was clean because you didn’t check. Maf sensor was not cleaned for at least 6 months prior to tune. As already discussed here – you can’t tell from logs how clean it is until it’s filthy. And even then it took you two revisions, which could have all been avoided.
Seems very ignorant to tune people’s cars without even asking what they’ve done to prepare.
Why are you selling road tunes if now you say there’s an issue with tuning by logging/lv? If I read that correctly – you just wrote that a laptop without a dyno - wouldn’t be able to differentiate if there’s real knock or not. I know you’re going to say that you do check for knock and that if it’s clean then it’s safe. But two/three pulls on the road, without even a third gear pull (on 5EAT auto needs to go up to 170km in 3rd, which I had to figure out myself because you never told me first 2 meets) – are they a true indication of all driving conditions/weather/top end issues? A good tune needs a dyno. Then a road to tidy up. Your words too btw.
Your three main successful, happy customers on here, Rome_sti, Dr0t and chaotic – all dyno tuned and wouldn’t have it any other way. Dr0t has said he would never even think of just having a road tune alone. Yet, you market it.
In summary, matt, I believe you can tune, you certainly know a lot. I was quite happy with the dyno tune, had only small annoying issues. I keep repeating that. The methods and what you don’t tell your customers – that’s what’s not good enough. It’s dangerous, and if there was a duty of care – you wouldn’t be meeting it.
I’ve since changed tuners, because my tuner now doesn’t guess at the problem – send me two tune revisions, and then when it fails, asks to check mechanical – he asks first, then after I check, he changes the tune. He also replies within an hour, two tops. Not a day, or two or never, hint hint. When my IAM dropped to 0, my knock through the roof and my ecu was telling me the car’s about to blow up, how long did it take you to send me a copy of the tune – and I asked 3 times over a week,by sms, email and in public. Nearly two weeks? Just to email an existing file off your laptop??
Our engine’s too expensive to wait around until the tuner decides to reply, because he’s too busy on the forums posting about his amazing anti slip 5eat lock up and how the other tuners aren’t as good.
Most of these issues could have been avoided if someone didn't market a road tune as a good complete tune.
can range between shite fuel economy to having annoying car lurching boost spikes to having detonation inside the engine you cant see which wears away at the engine until it pops a year later. All easily avoided by logging the car.
