Well...I've had the unichip for the summer. Mild mods. The a/f ratio is freaking perfect (which is great...). BUT then unichip retards the timing sooo much that the dyno horsepower is LOWER THAN STOCK (even with my mods!)(hand) from 4500 rpms to 5300 rpms, then gushes the power back on and its great from 5300 to redline.
So the issue there is that you need to tune the timing to come on better in the mid range rpm (which sounds easy...) BUT the nearest unichip tuner is hundreds of miles away (and I'm in big city Minneapolis), and I was quoted $1000 for a days tuning session (which is ubsurd). But I will get this tuned, somewhere cheaper, eventually, for better mid range and that should be fine.
The stock unichip tune is really crazy: from stock msp to high boost unichip I had a max torque gain of 100ft/lbs!!! at 3800 rpms, then a nosedive to a LOSS of (-25ft/lbs) at 4800 rpms, thats on 3 different runs for both stock and unichip!!! Then back to a gain of 25 ft/lbs at 5500 rpms. So Unichip was "suposed to" eliminate the hesitation of the msp, that's not the case here.
Horsepower: up 50hp at 4000 rpms, down 25hp at 5000 rpms, and up again over 25 hp from 5300 to redline.
this is all wheel/dyno hp and tq rating
MPG has improved a decent amount, I'm about 30mpg in regular driving, so thats good.
BOOST: uhhhh, well low boost is great, I'm going above 7psi and the car runs strong with no issues. High boost is not good for me, but not really bad either. I go to 14psi spike and lower to about 11. my car will hit fuel cut if the weather is any colder than 60 degrees so I can only use it on pretty warm days and not usually at night
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sooo. Bottom line, low boost is great, mpg good, stock tune is shaky at best and if you don't have huge expectations I'd imagine this unit is OK. I plan on sticking with this Unichip for now...to get a tune next year and hope to see the mid range FIXED! If I could do it all over again, I probably would go with a microtech full stand alone. They can be found used on the forums for an expensive price, but they can be tuned anywhere and have a much greater selection of tune. I'm also seriously concidering throwing out the ebc unit and sticking on a manual boost controler in a day or 2. I bought one months ago and have just kind of hoped that high boost would come around...
