WinterPark'85RX-7

Recently purchased a v. nice all stock 85 GSL-SE w/ 76k miles - super condition.

I've been reading all over about the throttle body modification [TB Mod]. Seems it consists of two parts: first, rerouting a hot water hose that normally feeds hot water to the TB and second, removing the (secondary?) butterflies in the TB.

Can someone explain what problem these modifications are designed to 'fix' and general comments on whether this is a good idea or not?

OG BBF

Double throttle system prevents you from using too much throttle before the car is fully warm...:problem with this is, over time they can become stuck and cause problems. Removed more as a reliability mod so long as you allow your engine to warm Properly before you drive like a madman I don't think there's any negatives to this mod.

With regards to the coolant hose to the tb, it assists in stopping the tb from freezing up in cold weather, allowing coolant to flow around it. I've heard arguments for and against, but unless you live in a cold climate, I'd delete it entirely.

I've done both mods and 0 issues. Plenty of guides out there on how to do it.

WinterPark'85RX-7

Thanks, OG BFF! I live in Florida so cold weather is a non-issue.

OG BBF

no reason not to do them then. With regards to the tb coolant hose reroute, I personally just deleted the hose and capped the nipple that comes out the short block end where the hose connects.....never had issues. -all the best.