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Of all the parts I put on my Viggen the single biggest improvements were In this order The ECU # 1 and thats pretty obvious. But if you don't want to do the ECU like I originally started out doing I would go with the Intercooler #2 or exhaust #3 for me anyway. then I would say the cams #4. The cobra pipe I could not tell THAT much difference. But If I had to by it again I would. You just will not be able to feel anything uless you have those other mods and an ECU.
So without the ECU do your Intercooler or suspension.
posted by 69.239.135...
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