Quick question...Lil Help
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i believe its when you bump up the boost and with a boost controller that is not all that good, boost spike i think i when your boost goes higher than it is set at due to it climbing to fast for the controller to since.
i might be completly wrong.
i might be completly wrong.
im not to keen on boost creep, but i do know that it means it goes over the desired limit, perhaps harming the car
boost spike is when, under WOT and your boost is set high as it is or you have a crappy boost controller, it will Spike over the limit real fast, sometimes caushign fuel cut if it is over 17psi
hope this helps
btw, i could ways be wrong, so you should use the search feature
boost spike is when, under WOT and your boost is set high as it is or you have a crappy boost controller, it will Spike over the limit real fast, sometimes caushign fuel cut if it is over 17psi
hope this helps
btw, i could ways be wrong, so you should use the search feature
Last edited by Daredevil; May 19, 2004 at 01:23 PM.
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Boost creep is rising boost due to not enough exhaust bypassing the housing. For example, you're set for 13 psi, and when you floor it, you get a quick rise to 13 or 14 psi. But then as rpm's climb, the boost creeps higher and higher: 14, 15, 16, 17, etc. Enlargening the wastegate hole is one cure for boost creep
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Spiking is when your wastegate hole is large enough, but your actuator can is taking too long to fill with compressed air, so you *temporarily* overshoot your boost level. Example: you're set for 13 psi, and when you floor it it quickly rises to 16 psi, but then gradually drops downward towards 13 psi again.
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Normal boost rise when set to 13 psi = shoots up to 14, then 13, 13, 13...
Spiking = shoots up to 16, then 15, 14, 13, 13, 13...
Boost creep = shoots up to 14, then 13, 13, 14, 15, 16, 17...
Spiking and boost creep = shoots up to 16, then 15, 14, 13, 14, 15, 16,17...
Spiking = shoots up to 16, then 15, 14, 13, 13, 13...
Boost creep = shoots up to 14, then 13, 13, 14, 15, 16, 17...
Spiking and boost creep = shoots up to 16, then 15, 14, 13, 14, 15, 16,17...
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