can anyone tell me the max psi on a stock set up 3rd gen?..........and with basic mods is 13-14 psi safe?...........................with a apexi commander wot i s safe boost level to run? (assuming pump upgrade but stock injectors)

thanks
susan

 

DO.....A.....SEARCH

Don't you think this is a fundamental question that would have been answered on, ohhhhhhh, say.....the first day this forum was created??

 

the pump will out flow the injectors. Do a search to check this out.

 

to start, the FD has NO MAF, that means that it has no idea how much air is flowing through it. stock boost is safe, that's about it.

you can normally get away with about 3 air flow mods on the stock ECU. (intake, downpipe, cat back for example) after that, the stock fuel map is getting overwhelmed, even at stock boost levels. watch out for cold nights and even without any mods make sure you transition your turbo's smoothly, without a spike.

this is the general rule of thumb.

 

Stock pump is fine for the stock injectors.

a properly tuned PFC with supporting mods (CAI, IC, exhaust) will handle 13-14psi (some professionals will say 13psi is the limit of efficiency for stock twins)

 

amramm4..u have serious issues....i was only askin for help....if u dont want to help, dont post
for the new people askin is how u learn....werent u once a new rx7 owner?
think about it
susan

p.s.......thanks for the other replies guys,,,xxxx

 

Alot of people here will jump on you quickly if you ask a question that has been asked over 1000 times... once you have been here for a while you will start to get annoyed too... some of us choose to be mean to the people who post those questions, some choose to help and the majority will ignore the post...

when in doubt do a search before you post We have ALL made a "reoccuring" post at one point.

 

actually, reading is how you learn. which can be done by searching. Thanks for playing....

 

u think? my car was maxed at at 12.5psi tuned to a 11.2afr

 

With a stock ECU, you should keep your boost at 10psi maximum.

 

correnct me if im wrong... but i believe he is asking how many PSI you can push throught the stock twins before they poo! (of course this will take an ECU upgrade, new IC probably, and upgrading the fuel system). so how far CAN one push the twins?? i dont know? anyone? im sure once you hit a certain PSI you are out of the efficiancy range.... -heath

Oh yeah, PS dont be so mean people... we have all reposted questions multiple times (at least i have) ...yeah its anoying but sometimes good points (on a tangent to the actual question get brought up)... i dont know, if you want to tell someone the question has been asked before nad to go search try to say it nicely at least (or say nothing at all)... and if you have some pent up agression, direct it towards some douche cannon in a stock civic with a huge wing, and spinner hubcaps, bumpin mid 90's "dance" music! food for though -me

 

i thought i saw a convo abotu this a few days ago. i believe it was something like 17-18psi? this was when the efficiency went down the pooper.

 

I run 15 psi when its cool outside, otherwise I keep it around 13 psi. I have 4x 850 cc injectors and a supra tt fuel pump. 15psi is right at 85% duty cycle with my streetport, 850's etc. running sx FPR. of course I also have a front mount cause the stock intercooler = teh gay.

 

17-18psi out of the stock twins?? not BNR modified, but STOCK twins?? wow, id be quite surprized to hear that. im assuming this would be non sequential.......

 

10, Ten, X, Motherf*cken 10psi... that was playful, not hostile =P

 

I have actually hit 17 psi a couple times, and it pulls like crazy but I dont like it up there, so it rarely happens.

 

According to Yamaguchi/Dinkel's book, the Hitachi HT12 Turbos were designed to have a regulated maximum boost of 22.4 in (570mm) of mercury (Hg).

But with a stock ECU, the engine will likely go bye-bye with constant boost sustained above 12.