hey guys my car is cutting out in boost and i cant figure it out. ive changed plugs and wires. new dizzy. car is getting fuel. it cuts out at anything over 10 psi mostly. my set up is garret 57 trim. tiel bov and waste gate. dsm 450s and a aeromotive fpr any help will help lol.

 

Tuned?stock map sensor?

 

yes maybe map because stock cannot handel over 10.68 psi i beleive

edit: and u said it cuts out after 10 psi so give us more info on ur setup

 

 

its tuned on chrome and its stock map but this is the first time ive had a boosted car do this. this is the 3rd boosted honda ive had and all had stock maps. i can try that nd see if that fixs it.

 

Has it always done it or did it just start doing it after working normally?

 

What boost levels were you running on your other boosted hondas with stock maps?

 

Boost leak would be my first guess. Build a boost leak tester.

 

well i figured out what was wrong. it was the ecu.. dno how but it was lol

 

At least you got it fixed. Good job.

 

Wha? At least explain HOW it was the ECU.

 

Yes please explane how it was the ecu and what you did find that out. I'm a little skeptical about your boosted honda being able to run over 10psi an a stock map

 

but if stock map sensors can only read 10pounds how...is it working.

 

i bet it was a cold day when he was getting boost cut. then when he thought he fixed it , that day was warm

 

why do u say that?

 

Physics?

 

thinner air?

 

Pretty sure the stock map can only read 10.8 or 11 psi of boost. Cold day more dense air= slightly higher boost level= fuel cut??? Sounds possible to me.

 

stock map wouldn't do that unless its told too. It is my understanding the stock map would simply run the last fuel table to anything over 10psi.

 

ive never had a boosted honda with a aftermarket map. im running 15 pounds. idno how the ecu messed up but i got a good deal on a ecu with the new neptune software on it so i put a basemap on it and it fixed it. im guessing some how the chip in my old ecu messed up some how. ive never had a problem running 15 pounds. i know its prolly not good for it but my last boosted civic went 2 yrs on 15 pounds all stock and the motor had 200k + on it

 

 

If you look view the options (press F4) in Crome you will see a box than says boost limit and the measurement is in mbar. Raise the number and you raise the boost limit. Just make sure your tune will support the added air flow.

 

Im thinking you had a boost cutout set and this new ecu doesn t so now all that boost spoking is gonna blow that motor even faster....

 

i was going to guess spark plug gap since no one mentioned it, but if you say you fixed the problem then i guess you fixed the problem.

 

it all a sudden happened. i dont drive it daily. the bottom end is built it will get a diff map and a new tune in the spring. im not worried about it if it blows it blows lol