I just installed a mbc from ebay on my 1.8t, the car already has a fmic and because of it the psi had dropped to 6 psi, i figured ill get the mbc to bring the psi back to stock. After i installed it, it spiked at 11 and held at 10, i like how itpulls now, but i was wondering how much higher can i really go without a chipped and without blowing my motor?

Not really interested in chipping at this point....

 

None of us can tell you, what you need is a AFC, wide band O2 and an EGT gauge to see if you are in the "safe zone". OR you could just buy a chip cuz they do all the guess work for you. I would guess 20 psi could be reached with the proper logs and NO chip.

 

Search, the diode mod by cincytt! Its amazing, if ur car is 00 and newer use lemmiwicks to add fuel and ull be good for 18psi.

 

my car is a 99.5 i thought diode was only for cars with boost sensor which mine doesnt have. Also i dont know what setup im going with yet, so i dont want to buy a chip until i decide what ill be doing.

 

I also have a 99.5, what are you thinking? BT,K04 or just chip?

 

dont know yet but im leaning towards gtrs eliminator kit. i want power but i dont want the headacheof overpowering the car. i want some sort of reliability.

 

If you set it up right (good parts) a BT will do just fine and not over power the motor. I am going with the gtrs elim and my car is a DD for my wife.

 

good choice. gtrs is a nice power gain, yet still small enough to not affect reliability too much. you might wana consider going full gt28rs tho. just something for you to research a little...

as for the mbc, you'd need to know what the a/f ratios are. 10 psi should be safe tho. a 3 psi increase out of a k03 isn't really adding that much air. there's someone on here (can't remember his name at the moment) who is running 14 psi with a mbc and so far he hasn't seen any problems. i think he'll see some soon tho.

 

kemp traivs?

 

You should be fine as far as the motor goes running the K03 at 10 psi. I have a 2000 and it peaks at 9 and holds about 7-8 psig, so I would think 10 would be no prob. The only worries you might have would be a lean mixture at first - the fmic will cool the air better and you'll have more (dense) air into the engine - but the MAF should adjust the fuel mixture to compensate if it's working right? Also check your fmic setupfor a leak, which wouldalso contribute to loss of boost pressure. What MBC did you buy? I'm thinking about getting one untilI decide on a turbo and chiptoo.