Interesting to feel the difference. Very smooth revving, especially after 4K rpm. I'm considering removing the bac now. Any tips? Also, I have a 89-91 upper and middle intake. Will this match up to my lower intake on my 88 N/A?

 

No the two manifold have different bolt patterns. CJ

 

I'm thinking about doing it, but am concerned about any drawbacks. What advantages did you see? Is it rough untill it warms up?
Whould you recomend doing it for power/performance?

 

did you port too?

 

you mean,you only have to sit there for 10 sec. before the car will idle on its own?i have been thinking about doing this also,but i'm a bit concerned about early mornig cold starts...i live in the pacific northwest,and we do have lots of'em...but sound like it will idle pretty good then,even w/o the cold start...yes?also, i have looked at my tb,where can you port the thing?i mean,unless you put bigger throttle plates in,how can you inlarge the passages?
d

 

I didn't port anything, but I did notice a much smoother flow in the upper rpm range. I'm having just a little trouble getting my idle to exact specs, but not too much of a problem. If you live in cold weather, hmmmm I don't know if you'd wanna do this. Considering you've done just about everything else, you probably wouldn't notice too much of a difference. I live in Hawaii, so cold weather is never a problem. Take off and slow down is a little abrubt, but it's not too bad. Anyway, it's an easy mod. Took me about 90 minutes start to finish.

 

My car will idle all by iteself, as soon as you hit the key. I noticed maybe a 2-4hp butt dyno increase. But the car became alot more responsive, and "revy" CJ

 

I am a newbe to the whole RX-7 thing and wondering how and what do you do for a thottle body mod???? I have a 87 GXL. Thanks for the help Dave

 

Is this applicable to 1988 Turbo II??
Would this help quicker throttle response?? Mine seems to take a little long to rev up. Compare to other regular passenger cars like a Honda that my Dad has, my TII seems to take some time from idling to 3000~4000 rpm..

 

Results are less noticeable on an NA car. Part of the gains in HP, and throttle response for Turbo model cars is the turbo spooling up quicker because of less initial resistance by the 2nd-ary throttle plates when you stomp on it.

 

wrong thread

 

DJ....use the little search button, in the top corner of the page. Its been talked about a million times. CJ