Quote:
Originally Posted by ImportConvert
I bought z1 smooth post maf tubes, cosworth drop-ins, and a berk cbe. Changed the cars whole personality aurally, and feels a bit stronger. $1200 total. I don't think my mods require a tune.
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You are right about the tune not being needed. It would give you a bit more if you did plus other maps for valet and low octane or anti-theft. If you had replaced your cats, it would be best to get the tune. You just have to weigh the cost to power gains.
Cheapest gains IMO are drop-ins w/ MAF tubes and lightweigh underdrive pulleys.