 Stock St205 running 10-12 then 14psi |
 Mar 15, 2011 - 10:37 AM
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Enthusiast  Joined Aug 15, '10 From Nevis, West Indies Currently Offline Reputation: 0 (0%)  |
hey, am wondering if my vsv has an issue, normally my car would build boost slowly to 12psi in 2nd gear+, only reaching 12psi at about 6000rpm upwards.
but yesterday I did absolutely nothin to the car, and it begins running 14psi, boost needle shoots right up to 14psi and soon as I get on the gas. Is this a problem? any info or advice is appreciated. Its is basically stock with an HKS intake, gutted cat and a 3" exhaust from midpipe back. -------------------- 1994 Toyota Celica GT-Four ST205 Turbo 4WD, Black
Nevis, West Indies |
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Apr 12, 2011 - 8:50 PM
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Enthusiast Joined Aug 15, '10 From Nevis, West Indies Currently Offline Reputation: 0 (0%) |
I think there is probably a problem with my wastegate though, ama get it tested soon, because when it does 14psi, it hit 14psi by about 4000rpm tops, and turbo response is rediculous. but currently it starts building boost very sharply but slows after 7psi and slowly climbs to 10.
-------------------- 1994 Toyota Celica GT-Four ST205 Turbo 4WD, Black
Nevis, West Indies |
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Apr 13, 2011 - 12:31 AM
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 Enthusiast Joined Feb 11, '08 From Auckland, New Zealand Currently Offline Reputation: 0 (0%) |
QUOTE (cax_11 @ Apr 13, 2011 - 1:50 PM)  I think there is probably a problem with my wastegate though, ama get it tested soon, because when it does 14psi, it hit 14psi by about 4000rpm tops, and turbo response is rediculous. but currently it starts building boost very sharply but slows after 7psi and slowly climbs to 10. I dont understand? So is it responsive or not? If it swings up to 7 immediately its responsive, if it doesnt then it's not. Swinging up to 7 and creeping up to 10 and hanging around there does sound like the VSV, so maybe its time u ditched the VSV and got a boost controller? Because the wastegate is sprung to 10psi, it makes sense to hit 7 and creep up to 10 (that's wastegate creep, normal) but the not going past 10 part is the VSV not functioning, but as I said before double check leaks esp the throttle body clamp -------------------- Mike W
1996 Toyota Celica ST205 GT-FOUR GT2860RS turbine, TiAL mvr44, JE 86.5φ piston, Clutchmasters FX400, APEX P-FC 269awhp / 273ft-lbs |
Posts in this topic
cax_11 Stock St205 running 10-12 then 14psi Mar 15, 2011 - 10:37 AM
presure2 maybe a leak in one of the vac lines between the T... Mar 15, 2011 - 11:34 AM
cax_11 QUOTE (presure2 @ Mar 15, 2011 - 12... Mar 15, 2011 - 2:18 PM presure2 QUOTE (cax_11 @ Mar 15, 2011 - 3:18 ... Mar 15, 2011 - 5:30 PM cax_11 QUOTE (presure2 @ Mar 15, 2011 - 6:3... Mar 15, 2011 - 5:45 PM schmooot well stock is 12, so on the days when it is runnin... Mar 16, 2011 - 9:12 AM cax_11 QUOTE (schmooot @ Mar 16, 2011 - 9:1... Mar 16, 2011 - 9:15 AM delusionz It can vary.
Just keep in mind the magical figur... Apr 11, 2011 - 10:55 PM cax_11 QUOTE (delusionz @ Apr 11, 2011 - 10... Apr 12, 2011 - 1:43 AM delusionz CT20b is a very responsive turbo by nature and the... Apr 12, 2011 - 2:13 AM cax_11 Ok, It is responsive it max at 10psi majority of t... Apr 18, 2011 - 1:29 AM delusionz Checked for codes?
Sometimes you'll have a co... Apr 18, 2011 - 5:15 PM cax_11 it has no codes.. Apr 18, 2011 - 5:41 PM |
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