boost spike

[jeepin270]

Boost always spikes when I clamp the throttle, it always settles down to whatever I am running. If I am running 10 boost at low elavation and it spikes to 13 it hasnt caused any det or shown ill effects. It also did this a couple yrs ago on the dyno. Actually it has always done this, but why???

 

[Wheel House Motorsports]

are you running a manual boost controller?

 

[jeepin270]

Yes. It is the one silver one with the knob that u turn up or down. Came with silbers old iq kits

 

[adam5187]

My kit on my 13 spikes as well. On my 07 dragon I had the same controller and I just drilled out the office on the out nipple and it seemed to controlled the spike

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[jeepin270]

My kit on my 13 spikes as well. On my 07 dragon I had the same controller and I just drilled out the office on the out nipple and it seemed to controlled the spike

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Not sure what u mean. Can u explain more?

 

[adam5187]

This should show it.
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[Wheel House Motorsports]

the reason you see the spike is the delay of overcoming the spring setup and filling the lines through the tiny orifice so boost rises faster then the wastegate sees pressure but then stabalizes after its there for a second.

 

[adam5187]

Yes that is s very good explanation. I drilled mine little bigger and I like not having that bit of spike

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[jeepin270]

So if your pretty close to being maxed out or I am maxed out as far boost for my application and it spikez ovr that, is that gonna be a problem?

 

[Wheel House Motorsports]

as far as det or something goes? its usually not an issue as the motor really isnt loaded down yet.