dazman69

ok just bought an 93 rx-7, i've done a lot of reliability mods already, and im currently running two non-sequential jap-spec turbos, (7 vac lines!) I've just switched over from the turbo honda world so i know a good deal about turbo's and their supporting systems. I have a couple questions that can be easily answered by you guys and would take me a couple hours to search, so don't tell me to search.

I'm looking for around 300whp

-when do the stock injectors max out?
-whats some good fuel managment that can be tuned but not too pricey. Honda has hondata or aem ems, aem ems is out of my price range, I just want a standalone to create/adjust fuel/ignition tables.
-how much is the extra power (properly tuned) going to effect engine life?
-what is stock boost pressure, how much can the engine take properly tuned?
-fuel pump?
-how much power can a stock motor take before **** starts to blow?
-i know u guys are die hard rotary fans, but really what do u guys think of the ls1 swap? I was considering it when my motor gives mostly because of reliability. I mean u get rx-7 looks, rx-7 handling, but american v-8 reliability and power. Good combo if u ask me.

These are simple questions with simple answers

speeddemon7

well I cant answer all of your questions but I should be able to help you out.If all youre after is 300 rwhsp then an intake,downpipe,catback and midpipe should do it.Keep in mind that you will also need to tune for the modifications.A effiny y - pipe,an aluminum ast,silicone vacuum job,and an upgraded stock mount intercooler or v mount setup will also be beneficial.

The most widely used standalone aftermarket ecu is the Apex Power Fc. 1200 to 1300 bucks.Keep in mind that it comes optional with datalogit more money.The ecu out of the box has basic fuel maps but only serve to make the car driveable to your tuner.Meaning no boost or youll risk blowing something.Also you will have to have the wastegate ported in order to run the midpipe.Otherwise you will see boost creep.Boost creep cannot be controlled by a boost controller.Only boost spiking can be aleviated with a boost controller.There you go.Also the stock boost levels for our cars is 10 psi.Go beyod that without tuning and you risk blowing the apex seals on your motor.As a rule of thumb the higher the horsepower the less your engine lasts.Hope this helps.

Also if you want to increase your rate of accelaration without messing with any engine or boost parameter then I also suggest the racing beat rear end/ differential gear upgrade from the stock 4.1 gears to the 4.3 gears.You will lose a little top end but will gain in the low end where it really counts.

RE Suzuki

1) stock fuel injector can be used with 300hp level, but note that your injector is quite old and it may not be functioning perfectly. It maybe good idea to replace them anyways.
2) stock fuel pump can also be used with 300hp level, but again it may not be functioning perfectly.
3) stock twins can hold up to 1.0 kg^2cm. If over, it will not last long.
4) When you spend less money on your car, it increases the chances of blowing up your car.