Palazzo 477 Report post Posted March 22, 2006 Does anyone have any ideas for a bigger throttle body for a 325? I think I read somewhere that one off an M30 will fit? Can the M20 be bored out? Anyone done anything with individual throttle bodies? Andrew, what did you use on the intake side for your race car project? I understand that the standard TB is a limiting factor in producing power and any cam upgrades can be hamstrung by this. Quote Share this post Link to post Share on other sites
Gus 5 Report post Posted March 22, 2006 i installed a bigger TB from e30zone (not the site, a user on there) uses same size throttle plate as an m30, with the body bored out to match made a bugger all difference...i really would not bother. i think the limiting side of the 325 intake is the port size (compare to s14 and you will see what i mean). having said that for high tune m20 (2.8 + other mods) its worth it....and for me i wanted it for the eventual turbo side of things ITB"s are doable with after market management, but i really don't know how much gain for the hassle and $$ of setting them up Quote Share this post Link to post Share on other sites
Palazzo 477 Report post Posted March 22, 2006 Hmmmn. You've just confirmed what I was thinking. As usual, hp = $. Quote Share this post Link to post Share on other sites
Gus 5 Report post Posted March 22, 2006 hp per $ is what im all about and i think stock is the best way to stay, unless you prepared to spend some serious coin to do things properly and get big power Quote Share this post Link to post Share on other sites
drifty325i 0 Report post Posted March 22, 2006 hp per $ is what im all about and i think stock is the best way to stay, unless you prepared to spend some serious coin to do things properly and get big power Good call! Quote Share this post Link to post Share on other sites
Palazzo 477 Report post Posted April 4, 2006 You're quite correct, changing one item would make sod all difference, but this was part of an idea to upgrade quite a few different componenents. My main question was has anyone done it and how hard is it? Does it make sense to do along with other upgrades as I've read or, in the opinion of those who have done it (Gus), was it a waste of time. Cheers. Quote Share this post Link to post Share on other sites
bravo 35 Report post Posted April 4, 2006 Engines are just air pumps The more air you can get through a motor for the same RPM the higher the power (if you have the associated fuel) Nice quote from the latest AA magazine. No, you are not the only person who reads it. Quote Share this post Link to post Share on other sites
