last week ive been havin a problem when iam in 4 and 5th gear on highway.
for exp iam in 5th going 70 and press on the gas it feels like the car jetters relly badly, it goes to 28 then back to 22 then to 20 then to 18 then 22.. i told my firend and he said it probly a bad case of boostcreep.
if anyone has any ideas of whats going on please help and sorr for not being able to explain it better as of i have no clue what it relly is..

 

mods?

check your spark plugs

it very well might just be boost creep need more info though

 

28 psi? Holy poopie That's a verrrry bad boost creep

 

Maybe a boost controller would help?

 

most my engine mods right here
ENGINE / EXHAUST
Apexi GT catback exhaust
Buschur ported and coated exhaust manifold
Buschur ported and coated O2 housing
Buschur ported and coated turbine housing
braille light weight battery 20pounds
Buschur Lower intercooler pipe.
exeddy stage 1 clutch
forge blowoff valve
Megan racing downpipe with atached testpipe
Vishnu down pipe
spearco intercooler(paid off, on order)
Vishnu cam gears
jestr tuning custom tune
wideband
samco inlet tube from turbo to intake
Samco radiator hoses
Clear cam cover
Copper spark plugs
Walbro fuel pump
blitz custom air filter(lager then normal one for evo)
HKS 264 cams
FORGE manual boost controller
Perrin oil catch can
ARC titanium heat shield
APR carbon fiber radiator cooling plate
Samco intake manifold tube
Apexi voltage regulator
Ralliart plug wires
Kartboy polyurethane bushings for shifter and linkage

 

Make sure your MBC is hooked up properly. Do you always run 28psi? If you do a 3rd gear run what does your boost gauge show?

 

Check all your hoses, you may have leak somewhere or something may not be hooked up right.

Is the forge blowoff a recirculating one or is it venting to atmosphere?

 

blow off is recruting one, and no i boost 22 most the time 28 is way to high..

 

Ok this is going to sound weird, but check for moisture in your MBC and lines. About 2 months ago a guy with an STI was having funky boost problems at my mechanics shop and they found condensation in the lines was the culprit. They blew out the lines and mbc with air and it cleared right up. But the only reason he was having issues was the condensation was freezing in the mbc, I don't know what the weather is like where you are.

It could just be that your mbc is going bad for some reason. I haven't heard of many Evo's getting boost creep with a MBC.

 

Did this problem just start happening ? Do you have a EBC? It sounds like your hitting boost cut or fuel cut. I had the same thing happen in my AVC-R boost controller when I first got it and it just had to be configured properly.

 

i have a mbc, and iam gonna check the lines and pugs right now.. if anyone has exprience with this aim me at evokombat

 

still same problem guys,, someone told me to actuly switch to a ebc i was looking at the sbc i color. but would that sovle the problem???

 

no your forge is fine..
did you change the plugs?

 

yea they were fine, so i have no clue what it is