Do I need a 3 bar map sensor if I'm going to run BNR Stage 3 twin's at ~16 psi?

thewir

 

yes

 

Is it just because its more accurate? To my understanding the stock sensor can read up to 19 psi.

thewird

 

no, I think it reads up to 15.X PSI...actually maybe 17.X

I can't remember...it's been so long

 

17 PSi, typo ^_^. So its just a preventive thing in case it boosts over 17. Guess I'll get one, thanks.

thewird

 

after a certain level of boost it doesn't read correctly. i forget the number. i'd say if you're gonna run over stock 12psi then it's a worthwhile investment. OF course you know that you'll have to have it special tuned with the PFC, right? Requires datalogit.

 

16psi is fine on the stock map sensor.

 

I would get one. I blew a motor with my BNRs and a stock map sensor years ago because I saw boost creep past the limitations of the stock map sensor. GM 3 bars are not expensive......

 

75 bux from rx7store.net with the clip.

http://www.rx7store.net/product_p/gm3bar.htm

 

Yah, thats exactly what I ordered earlier along with some efini emblems and badges . And I do have a Datalogit. Thanks for all the help guys.

thewird

 

3 bar really offers that much of protection when running over 15psi?

 

Not really. However, you can't tune what you can't tune (i.e. if your boost creeps past 17 PSI on the stock MAP sensor, you can't tune as the stock MAP doesn't go any higher). Basically, its not much different than if your car is tuned for 12 PSI and you creep to 16 PSI. If you aren't tuned for it, its a problem no matter what. You really only need a 3bar if you are going to run 17 and over PSI.

 

got ya!! thanks for clearing that up.

 

get one cause you kno you are going to boost more later on