When does your Turbo start to Spool?

Bakrauf

Member
Contributor
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2007 Mazdaspeed 3 Sport- True Red
Since I added the Vibrant exhaust I have noticed or it sounds like my turbo is gearing up a lot earlier than normal. Hell around,(when i step on the gas) -2 psi it sound like it reving up. Sometimes i drive aroun and try to keep out of the turbo to conserve gas. But I just cant do it..lol
 
when i opened up the exhaust the turbo spooled alot sooner. you have to really feather the gas to not spool the turbo.
 
msp35 said:
well, I reach 10psi by 2800 rpm. By removing the stock airbox then it's a lil sooner.

nice, what BC are you running? and to anyone else who left the boost alone and has a gauge installed, what PSI did your boost get up to?
 
yes, it doesn't take much to spool up anymore. for me, really light throttle will start spool up and i can reach full boost 9psi or so, at about 2900rpm. i didn't open up my exhaust, still the stock one on there. before i adjusted boost, i was boosting maybe 5psi.
 
No BC, just the spring on the wastegate trick. My stock boost was 7psi...so I was one of the lucky ones ;P
But now that it's warmer it only reaches 9 or so. I have a GHL full dp.
 
mine spools sooner than that i think ... in 2nd/3rd gear i can get 10~12psi by 2500~2700rpm =\
 
Fully stock setup it seems to start to spool up around 2000-2500rpm. Maximum boost probably doesn't take affect until about 3000rpm though from the feel of it. I don't have a boost gauge installed but I would imagine i'm probably peaking at about 6-7psi. I'm getting an Autometer Boost Gauge shortly so i'll let you know what the stock setup is like.
 
wellll i just fixed my actuator so now the wastegate opens properly so spool up takes more time =( lol

i get 1bar ~3000rpm
 

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