* From 2000RPM, the RX6 makes 7spi at 3500RPM; the twins are there by 2600RPM.

* At about 3200RPM, the stock twins build boost about twice as quickly, reaching their peak about 0.5 seconds sooner.

* At 4200RPM, the RX6 builds to 7spi in a little less than a second, whereas the stock twins are nearly instantaneous.

* Above 4000RPM the twins are actually slower because of the sequential transition.
 

Some people have observed that the RX6 is a good track turbo because
of its quick spool at moderate RPM. It's a very strong performer and is
probably capable of a reliable 400HP with the right supporting
modifications. However, this comparison should show that in terms of
lag (how long it takes the car to respond to pedal input) and spool (the
lowest RPM at which the turbo is effective) that the non-BB stock twins
respond much faster than even a smallish BB turbo like the RX6. The
twins spool 7psi as early as 2400RPM compared to the RX6 at 3500RPM and
respond roughly twice as fast, unless the deadly transition comes into play.

In each case, I held a constant RPM and then opened the
throttles abruptly. Each test was in third gear unless otherwise
noted. Here are the tests I ran and the results:

Tests on Stock Twin Turbocharger system

1300RPM: positive pressure immediately, 7psi by 2400RPM (4.5 secs),
full boost by 3200RPM (5.5 secs)
2000RPM: positive pressure immediately, 7psi by 2600RPM (4.5 secs),
full boost by 3200RPM (5.5 secs)
2700RPM: positive pressure immediately, 7psi by 2900RPM (1 sec),
full boost by 3300RPM (1.5 secs)
3100RPM: positive pressure immediately, 7psi by 3300RPM (0.5 secs),
full boost by 3600RPM (1 sec)
3700RPM: positive pressure immediately, 7psi by 3800RPM (0.5 secs),
full boost by 4100RPM (1 sec)
4250RPM: positive pressure immediately, 7psi by 4450RPM (0.25 secs),
full boost cut off by transition

 

This site is meant to give information related to the 1993 (o)Mazda RX-7 Twin Turbo.  Anything from rotary engines to wiring diagrams and turbo upgrades to tuning info, this site has it all! efini 93 rx7 13b anfini Turbo RX-7 Turbo RX7 turbo rx7 rx7tt rx-7tt  As well as the Rotary Engine Pickup Truck aka REPU repu