2002/Black/SS

iTrader: (3)

if i floor my car at 3000rpm its take about a second or 2 for it to spool the turbo and when it does its about 4000rpm already. but if double clutch the boost shoots way up at almost any rpm.

if i floor my car at 4000rpm it takes half a second for the turbo to sppol so it would technically spool at 4500rpm.

so do i have a leak or is this normal?

also if i floor it at low rpms in 4th gear it will spool at about 3500-4000. so is that what u guys mean?

red beast

yes......mine is spooled up between 3200-3500....

koolaid_kid

iTrader: (21)

Your car is O.K. The turbo won't start to spool until it is under a load.

Speed

iTrader: (33)

Spools by generally means the RPM at which the car will reach full boost under load conditions. Any rpm above that will still take some amount of time, depending on how efficient your system is. The way I test (because I have a 6 speed car) is I will put it in 4th gear or higher, bring the RPM down to about 1200 and floor it. You will see the boost start to build and it grows exponentially as you near your spool rpm.

For example, I'll bring my car down to 1200 and floor it. It registers on the gauge by about 1300, has over 5psi by 1700, and will have full boost (whatever I set it at) below 2200 somewhere. If I'm at say 4k and just floor it, it takes a split second to come on-line unless I brake boost it.

Full spool rpm is just a useful number to know where to stage and launch a car at or at what RPM you need to be at on a roll to brake boost and hit it. You will also find it varies a little with weather conditions (or really anything that can affect exhaust flow).

obZidian

iTrader: (2)

right, there numerous factors that will affect your "spool rpm" If you feel you are spooled a bit to late in the powerband, one thing is the lower the a/r of your exhaust housing. You'll lose a bit on top end power productivity but it will hit sooner. Also, downpipe sizing, routing, thermal exhange, etc.... these thing will effect your turbo spool performance