MazdaRx7Racer4Life

Well, right now I have enough money to send my turbo to bnr and have it upgraded to the stage IV. ITs money left over from the rebuild at the rotary specialist shop, the guy that is rebuilding it is also streetporting the engine and told me that if I get the turbo before he finishes, he will install it at no charge, my question is, can I set my boost controller to about 6 or 7 psi and keep my stock fuel mods until I can afford an injector/pump/computer upgrade. Right now the only fuel mod I have is an HKS FCON which can be tuned to run rich. I also have a greddy profec b spec II to control the boost.

Basically, I wanna get the big stuff on already, and add the injectors, pump and standalone later, can I do tat as long as I mellow down the boost......way down?

bryantho

https://www.rx7club.com/showthread.p...hreadid=288909

igottafc

iTrader: (6)

you cant lower the amount of boost with a boost controller, only raise it. you would have to drive cautiosly to prevent it from overboosting.

igottafc

iTrader: (6)

and as tempting as it sounds, its not recommended unless you have all your fuel problems taken careof, its just asking for trouble if you go your route. just my .02 cents -alex

MazdaRx7Racer4Life

so theres no way to hold the boost at 6-7 psi except putting stock intake/exhaust back on. Hmm.....those are long gone, guess ill be paying a visit to the rex junkyard for some stock exhaust and airbox parts, or maybe ill just pocket the money and pay labor charges AGAIN. dunno, Thanks for your help guys.

Digi7ech

iTrader: (1)

Well get the injectors before the turbo. You can use a piggy back fuel controller like SAFC or something to tune the injectors down for a stock turbo and then you can upgrade the turbo later.

I think it owuld be easier to swap turbos than injectors since you have to remove the upper manifold.

Also if you go Stage 4 you might want to get a Front mount.

You'll also want to get a MUCH bigger fuel pump. Check the BNR stage 4 posts around here.

and Boost controller only modifies it by keeping the waste gate closed by bleeding off pressure to it thus keeping it closed longer making the turbo spin up more.

MazdaRx7Racer4Life

MODS, close this thread please, it was a repost and I didn't notice until both were responded.