Pics ? are they any specific brand ? is a tune needed ?
Jesse,A little bigger than the stock throttlebody and have a little stiffer spring for more control at higher boosts to stay open and shut. Works perfect as an add on for the 4 inch cold air kits as the whole system now the same exact size. Makes a difference in throttle response also as more air is allowed into the system at the same TPS. Boost does go up a little but only with bigger pulleys of coarse.
Price shipped are $410.
Inquiring minds want to know! Looks very similar to my C6 Vette's throttle body. When ported for stock engine the throttle response was improved and crisp, really nice...so I was wondering if this is the same piece?what's the part number of the 90mm TB?