if you dont want lag.... you can easily attain that low end of the crank power range pretty easily. all you need are healthy turbos and motor, intercooler, openned up exhaust, stronger fuel pump, bigger injectors, ecu, and a whole lot ot good tuning. you can even get up to 400hp at the wheels (few have done it).



seriously though.... lag is way overrated

second thing....





for the power range you want, the difference between the lag from your goal of 3000rpm and the lag you're gunna get with a single turbo that will help you get to 400-500hp is about 1000-1500rpm.



when you are flooring the car, the car's rpm's go to 8000 in less than 2 seconds. with that said.... do you really think 1000rpm will bother you?



i used to think a lot like you until i realized that all the faster cars out there use bigger turbos, and lag is inevidable... and yet you dont see people trading in their large turbos with smaller ones right...... usually they just get bigger and bigger and bigger.

Seriously, the lack of low end torque is there but it is made up for by the tremendous top end. The engine is not throwing you back for the first two-three seconds of first gear but once the boost builds you feel like your in an airplane taking off. It's a fun car to drive. Like Kevin mentioned also, you can drive in the correct gear to keep right off the boost. With the fd gears you can drive in 3rd from around 30-90mph. Most of the time in 3rd you only have to give it some gas and your at full boost.



Seriously go get that ride and then you see what we are all talking about. Have fun.

I don't know about you guys, but a 400whp FD is more then enough car for the street and strip. And remember, boost builds up gradualy, it's not like you won't any power until fool boost.



Aim for 400 to the wheels and you can get it reliably too.

thanks for all your help, i really appreciate it. to be honest the idea of a little lag real doesnt bother me. i just would like to be able to get up and go pretty good from down low, like i said its a street car so say im waiting to take a turn , i wanna be able to go when i see gap in traffic. also i just dont want to have to floor the car everytime i want some power.



did you guys read the scc issue with the results for the ultimate street car challenge?? if you did youd know how the rotary did(not good at all) and that kinda worried me.



but like you guys said, the only way to see the truth is to get a ride in one.



oh yea , i figured a 15% drive train lose. so 340whp would be 400 at the crank and i know you can do that with the efini twins but i heard your alot better off going single, for the fact that its simpler and more reliable. so i guess the a-spec gt35r might be a good option.

like i say time and time again..... if you need instant power DOWNSHIFT!!! The stock sequential setup has made people lazy and they expect to just floor the car no matter what gear or RPM they are in and see full boost. Just because you see instant boost still doesn't mean you are in your powerband anyway.......

why not do a set of seq bnr stage III? would get to that neighborhood.

[quote name='pushnlacs' date='Mar 13 2005, 04:26 PM'] did you guys read the scc issue with the results for the ultimate street car challenge?? if you did youd know how the rotary did(not good at all) and that kinda worried me.



oh yea , i figured a 15% drive train lose. so 340whp would be 400 at the crank and i know you can do that with the efini twins but i heard your alot better off going single, for the fact that its simpler and more reliable. so i guess the a-spec gt35r might be a good option.


[/quote]



I saw the results, but every car there was modified in all different ways, I remember scratching my head to a few of the Rx7 owner's mods, but the other half of that battle was the DRIVER, like most situations.



And FWIK, 340rwhp is obtainable with the USDM Stock Twins, you don't need Efini Twins or BNR Twins to accomplish that...

again thanks for all the help. but my concern isnt really how the car will perform when floored, this being a street car im concered how itll perform at partial throttle and street driving, but i guess thats determined by tuning as much as parts. did you see the drivability portion for the rex??? they straight up said it had almost no tourqe and that the turbo didnt give any power at anything less than wot, that sucks,lol.



hey just wondering though, what are the bnr seq twins??? thanks again

Peform at partial throttle and street driving? That would be performance like any other car driven at partial throttle....less than full thottle. You can make 400 crank hp with the stock twins, which spool up in the 2500-3000 range. What turbo gives power when its driven in vacume? Almost no torque? Take the time to look at some dyno curves to see what kinda torque rotaries make. Just cause its an rx7 doesn't mean you have to drive WOT to get it to move. Its still a car.