Tell me what you guys think about this thread I posted in the Rotary Performance section based on my setup and mods (mods list at www.royjohnsonjr.com ).

https://www.rx7club.com/forum/showth...hreadid=175300

 

Great ET! As others have mentioned, the trap is a little low for 420-440 rw. I'm getting 91-92 on NS twins. Does your turbo lose spool between shifts? Jevin made one 96 mph pass and then his fell to 92-94 and he said something about it starting to not spool very well after each shift. Sounded almost like a leaking BOV or something I dunno.

 

In that thread, I speak of the reason of my lack of mph. The tuning stopped at 7200 rpm. If I took it to 8500, the mph dropped to 90 mph. I will fix that the next time I go to the dyno.

 

I shift like a granny. I'm working on that! I think 7.1x is no problem with the current setup. We'll see....

 

8500 rpm would be awesome. You would stay completely in the good part of your powerband and probably pick it up to 100 or so. I spent a long time optimizing shift points and it made a huge difference!

 

I'm working on my shifting. It's getting a little better!

 

With a 1.72 60' i ran a 7.202 at 100.75mph and i make 428hp on a mustang Dyno (generally a litlle lower than a Dynojet).... This was with an SR20 but the motors powerbands are very similar.... If you could hold that HP and pull it to 8500 you should be able to run some 6.90's without a problem

Shaun