Husemoller

This may sound really newbie of me...which i guess i am :P. But im trying to learn. I dont have an FD yet but hoping to get one in a few years, and figured i would start doing my homework. I hear a few people talking about how they run at different boost like 10psi and 12psi and such. How do you change the boost? Does it just automaticly do it or is there something i need to do? Dont flame me :P

DELTA_Rotary

You can get a boost controller and dial in the amount of boost you want.

Husemoller

10psi is stock? What do you guys mainly run ur psi at?

Mahjik

iTrader: (1)

You can't just simply plug in a boost controller and crank your boost up. It doesn't work that way.

To increase your boost, you need to relieve some of the back pressure created by the exhaust system and also increase the air flow into the car.

The problem then comes is that you've increased the air flow into the car but the ECU is still sending the same amount of fuel through the car. So the air/fuel ratio has changed to the lean side since you now have more air without more fuel. This is where upgraded ECU's come into play.

Once you have the air/fuel mixture set then you need to worry about the increased stress on the turbos with higher boost levels. Now that more air is coming into the system and getting compressed, it generates more heat. To deal with that the stock intercooler needs to be upgraded.

After that, depending on the amount of boost you are running, the injectors could be running too hard for fuel delivery. So upgrading injectors my be needed.

Basically, it's not as simple as just "cranking up the boost". You can run a up to 12-13 lbs of boost without breaking your bank account.

Husemoller

Alright thanks for the tips :P now arent you glad im doing my homework before buying the car heh

Mahjik

iTrader: (1)

Well, you are the one that should be glad. Purchase a bad car, or damage the engine can be an expensive mistake.

Incorrect modifying is the fastest way to an engine rebuild. Open up the exhaust, start boost spiking over 14 or 15 lbs without theh proper mods, get some detonation.. Then you'd be looking at a $4000 rebuild.

Husemoller

Ya thats very true. I been getting interested in cars for about 6months now or so.... went kinda slow with them... but last month or so i been trying to learn as much as possiable about them and ****. I feel like i learned so much so far...but now i look on this forum and i feel like i dont nkow anything hehe. I am not planning to buy an rx-7 for a little bit yet, but i cant wait!! gonna be awesome.

amp

iTrader: (50)

..along with knowledge of the car ...is knowing how to drive it
..spend the same amount of time learning both areas

R1Outcast

This car has its own querky personality. Read up, use this forum because there's a lot of good info here. I don't know if this is going to be your first car or not. If it is then really try to understand what you're getting into. This car loves the owners attention and needs a lot of TLC.

mmonaco

The thing you guys forgot to mention is to use the search if you have a question. We all learned this the hard way, so saving you the flames. Marc

Husemoller

Ya i found out the hard way :P
first time i found this forum i asked about reliability haha....i now know not to do that anymore lol.

Ya rx-7 wont be my first car, and i will learn how to drive those cars better. I can drive a manual....but its on my dads little ford 150 4 cylinder truck. Not much to it, so dont know if it will be alot different or what.

ttpowerd

Lots of difference from a 4 cylinder 'big' truck to a small, light, high hp, sports car. You have to be really careful and learn how to drive it b4 taking it to the streets. I recommend going to an empty parking lot and finding out what the limits of the car are (what your limits are) and staying within them once you get out on the street.

Husemoller

Thats what i was assuming... Little bit more power then my dads truck haha :P
But i guess only way to learn it is from experience, so i best get out there and drive one!!

amp

iTrader: (50)

..local autox
..youll learn much more than an empty parking lot imho
..not to mention, its regulated