Originally Posted by Jeff Alton (Post 12544448)

We have used many over the years. Not going to say what is best... :)

For a traditional butterfly style, we like Jenvey. Used them countless times with great results every time. We have also used PMO, Clewett, TWM (borla now?) Hargett (did some testing for them and not even sure if they are around?) and RHD.

Our go to is the Jenvey, high quality, easy to adjust and maintain their adjustment. We adapt the throttle set up a little to our liking. On same engines, they made more power than the PMO's but the PMO looks like a weber.

Jenvey also offers their heritage line, which looks amazing if you want a carb look, as injectors are hidden. We have not tested those. The Clewetts are very functional, everything is well thought out mechanically, just aestetically, they are a little "cludgy".

Was not impressed with the RHD at all. Too many pieces involved (I get it, modular to fit many applications) the linkage seems a little "light" for the appplication and they had a complete lack of instructions/tips with the kit. Client really wanted them, so we got a set.... They perofrmed well, but just not quite what we were looking for.

Not tried the AT Power ones, may some day soon. The clients we have built motor for with the all of the listed ITB's have been thrilled with the performance, driveability and throttle response. So we are happy.

Your ECU choice and tuner choice are likely more important to get good performance and driveability.

Cheers

Originally Posted by Jeff Alton (Post 12544448)

We have used many over the years. Not going to say what is best... :)

For a traditional butterfly style, we like Jenvey. Used them countless times with great results every time. We have also used PMO, Clewett, TWM (borla now?) Hargett (did some testing for them and not even sure if they are around?) and RHD.

Our go to is the Jenvey, high quality, easy to adjust and maintain their adjustment. We adapt the throttle set up a little to our liking. On same engines, they made more power than the PMO's but the PMO looks like a weber.

Jenvey also offers their heritage line, which looks amazing if you want a carb look, as injectors are hidden. We have not tested those. The Clewetts are very functional, everything is well thought out mechanically, just aestetically, they are a little "cludgy".

Was not impressed with the RHD at all. Too many pieces involved (I get it, modular to fit many applications) the linkage seems a little "light" for the appplication and they had a complete lack of instructions/tips with the kit. Client really wanted them, so we got a set.... They perofrmed well, but just not quite what we were looking for.

Not tried the AT Power ones, may some day soon. The clients we have built motor for with the all of the listed ITB's have been thrilled with the performance, driveability and throttle response. So we are happy.

Your ECU choice and tuner choice are likely more important to get good performance and driveability.

Cheers

Originally Posted by targa72e (Post 12544877)

Last option is to convert the existing 9M to a DBW but I'd still be out of idle air control monitoring throught the ECU

You do not need Idle air control with DBW. You can use the ECU to open the throttle to get what ever Idle you want.

John

Originally Posted by Rivet (Post 12544657)

Just as a small update on the RHD ITB's. They have since made a small revision on the linkage and now include a full published instruction manual with tips.