bosst problem.(i think)

Mitsubishi Forum Classifieds Photo Gallery Timeslips Member List Search Sponsors Contact MF
Mitsubishi Lineup Mitsubishi News Recalls TSBs Timeslips Calendars Register Login

bosst problem.(i think)

Printable Version

Mitsubishi >> Mitsubishi Models >> Mitsubishi Eclipse & Eclipse Spyder >> 2nd Generation >> bosst problem.(i think)

Page: [1] 2 next > >>

Message

<< Older Topic Newer Topic >>

bosst problem.(i think) - 9/10/2008 12:36:36 PM

needsagst98

Posts: 240
Score: 0
Joined: 6/25/2008
Status: offline

i have a 98 eclipse gst 5spd and i just installed RRE piping. well at least the lower and the throttle body elbow piece. they screwed up the upper ic piece. so i have to send it back. but is like a 2psi drop over rpm range normal? like from 12psi to 10? and i havea turbo xs mbc with fine tune. if i try and tune it a little will it elimate that?. or is that always going to be like that?

_____________________________

spool.

Post #: 1

RE: bosst problem.(i think) - 9/10/2008 3:09:35 PM

dsm1990gsx

Posts: 2954
Score: 0
Joined: 10/22/2007
Status: offline

What rpm range does it drop off, my s16g will hit 16psi and slowly creep back down to 14/15psi.

_____________________________

2003 Ford Escape old ladys car
1990 Tsi Awd daily driver
2007 Jeep Wrangler power wheels daughters car...soon to be converted from 12v to 24v

(in reply to needsagst98)

Post #: 2

RE: bosst problem.(i think) - 9/10/2008 5:45:34 PM

needsagst98

Posts: 240
Score: 0
Joined: 6/25/2008
Status: offline

m i want to say about around 5k.

_____________________________

spool.

(in reply to dsm1990gsx)

Post #: 3

RE: bosst problem.(i think) - 9/10/2008 5:55:37 PM

EMonz57

Posts: 11693
Score: 0
Joined: 5/13/2005
Status: offline

If the turbo cant hold the flow then it will taper off, or if you have a boost leak it will taper off. Seeing how you just added IC pipes I going to jump out and say get a boost leak tester or make one and it should tell you where your problem is coming from

_____________________________

1993 Supra 6spd(OOOO\ ..... /OOOO)

(in reply to needsagst98)

Post #: 4

RE: bosst problem.(i think) - 9/10/2008 7:15:42 PM

needsagst98

Posts: 240
Score: 0
Joined: 6/25/2008
Status: offline

ok thank you. im going to make one tomorrow morning and get everything ready to do it tomorrow afternoon. before i but the piping on i could hold 12psi no problem and no taper off at a certain rpm either.

_____________________________

spool.

(in reply to EMonz57)

Post #: 5

RE: bosst problem.(i think) - 9/10/2008 7:37:30 PM

needsagst98

Posts: 240
Score: 0
Joined: 6/25/2008
Status: offline

ok i just took it out and see what rpm exactly it was falling at. about 5900rpm is when it drops. if i put it in 5th and let it full spool to 12psi itll hold it. i held it for like 10-15sec and no drop what so ever. only at high rpm it seems to drop. and i know the max hp rpm is 6k from what i have heard. any ideas? sound like a boost leak? or something else? anything helps guys

_____________________________

spool.

(in reply to needsagst98)

Post #: 6

RE: bosst problem.(i think) - 9/10/2008 8:54:02 PM

EMonz57

Posts: 11693
Score: 0
Joined: 5/13/2005
Status: offline

boost leak

_____________________________

1993 Supra 6spd(OOOO\ ..... /OOOO)

(in reply to needsagst98)

Post #: 7

RE: bosst problem.(i think) - 9/11/2008 4:40:37 AM

TheEngineer

Posts: 10741
Score: 0
Joined: 1/25/2006
Status: offline

could just be the crappy stock BOV. I would start there because they always leak

_____________________________

quote:

ORIGINAL: pilsenblue
Even tho My car looks great It will never be fast. Kinda like a hot girl that dosent give it up

(in reply to EMonz57)

Post #: 8

RE: bosst problem.(i think) - 9/11/2008 5:25:08 AM

needsagst98

Posts: 240
Score: 0
Joined: 6/25/2008
Status: offline

yeah thats why im thinking. i have to wait until tomorrow until upper pipe gets here so i can get everything together and then check the whole thing for leaks.

_____________________________

spool.

(in reply to TheEngineer)

Post #: 9

RE: bosst problem.(i think) - 9/11/2008 5:30:36 AM

EMonz57

Posts: 11693
Score: 0
Joined: 5/13/2005
Status: offline

quote:

ORIGINAL: TheEngineer

could just be the crappy stock BOV. I would start there because they always leak

Which falls under boost leak, but if it wasnt leaky at 12 pIS before a LICP then it should leak at 12PSI after. Obviously if he was working on the charge pipes by taking them off and putting new ones on and now all of a sudden he is loose pressure Im going to have to go out on a limb and say he has a loose or bad connection slightly.

_____________________________

1993 Supra 6spd(OOOO\ ..... /OOOO)

(in reply to TheEngineer)

Post #: 10