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Top 2GNT Technical Turbo/Nitrous Tech topic #83351
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Subject: "is this boost spike" Previous topic | Next topic
baxsomMar-04-05 09:33 AM
Member since Nov 27th 2004
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#83351, "is this boost spike"




          

ok this is what my car is doing

only in 5th gear at psi of 8ish or more
if i am cruising not in boost and step on it
the rpm's shoot up to around 7k
then down the 4k then slowly raise back up
if i ease the pedal down the boost goes up
the rpms go up normally
and no surging

i am using a profec B spec II with the highest psi memory on
i have my warning limit set to 12 psi
but to make sure that it wasnt hitting the warning and decreasing the boost i have the decrease % set to 0
the memory says that i never hit the warning psi limit though

will the profec remember spikes or only boost that it has seen
for a couple of secs

thanks



1996 eclipse GS-T
1968 Ford Mustang
2004 Suzuki GSXR600
2006 Honda CBR1000RR
Decisions Decisions

  

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tim97rsMar-04-05 09:38 AM
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#83352, "RE: is this boost spike"
In response to Reply # 0


          

it only remembers the max psi reached. if you hit 10 a week ago and hit only 5 since, it will still say 10 untill you clear it.

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Global Ruler Of All ThingsDarkOneMar-04-05 09:43 AM
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#83353, "RE: is this boost spike"
In response to Reply # 0




          

Originally posted by baxsom
step on it the rpm's shoot up to around 7k then down the 4k then slowly raise back up


That's your clutch slipping.

______________________________
If a sentence found online has 35% misspellings or greater and includes at least two racially charged expletives, chances are it is a YouTube comment.

'95 Eclipse TurboGS (garage deco)
'95 TSi AWD (restoring a survivor)
'97 Talon ESi-T (poor impulse control)
'99 Eclipse RS-T (daily beater)
'13 Evo X (mostly stock)
'17 Sienna (Middle Aged Dad Mobile)



Factory Service Manuals: http://nawdu.de/files/

  

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baxsomMar-04-05 10:09 AM
Member since Nov 27th 2004
758 posts,
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#83355, "RE: is this boost spike"
In response to Reply # 2




          

Originally posted by DarkOne
That's your clutch slipping.


DAMN DAMN DAMN

i thought it might be possible but that would explain why i cant find a vacuum leak anywhere when i use an air tank to pressurize the lines

oh well
it is the stock clutch with 70K miles on it
i have already been shopping around for a new one anyway
looks like i am going to have to speed up the buying process



1996 eclipse GS-T
1968 Ford Mustang
2004 Suzuki GSXR600
2006 Honda CBR1000RR
Decisions Decisions

  

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DJ420aMar-04-05 10:43 AM
Member since May 19th 2004
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#83356, "RE: is this boost spike"
In response to Reply # 2




          

Originally posted by DarkOne
Originally posted by baxsom step on it the rpm's shoot up to around 7k then down the 4k then slowly raise back up
That's your clutch slipping.


DAMN, you beat me too it, lol. Nice call

  

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ForceFed420aMar-07-05 06:37 AM
Member since Oct 18th 2004
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#83424, "RE: is this boost spike"
In response to Reply # 4


          

Yuppers, that's a clutch.

It explains why it only happens with an onset of a lot of power, and not when you get on it slowly.

Sorry man emoji

Brian

Red 97 Eclipse GS (420a) MTX
Custom Garrett T3 Turbo system
Megasquirt w/52 lb/hr injectors & a Walbro 255
Kicker/Alpine Audio (3 amps, 2 subs)
90 Cav 2.2 TBI auto (winter) <- yeah, it's fast

  

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