Boost Spike Please Help

[kooofie]

this is such a newb question.....smh

im fully bolted on....stock turbo....running cobb ap on stage 2 v105

sometimes i hit around 22.7 psi and scared i might go higher


is there anyway maybe using a boost controller that i can set my boost to not go over 20 or 21.....i just want to preserve my stock turbo since im not really lookin to go big turbo....and i no im pushin the s*** out of it now but it hasent failed yet ; )

 

[gogogomoveit]

Sounds like a zoom boom in the making...

 

[kooofie]

im trying for that to not happen....honestly my s*** has been going really well for my stock turbo...it dosent even feel like it straining....big turbo is so expensive im trying to avoid that and ko4 rebuild isint to worth it...

 

[matsuda]

Try disconnecting the boost control solenoid.

If the boost goes above ~16 PSI, the wastegate is "maxed out" (problem caused by insufficient exhaust restriction).

 

[lavoiespeed3]

Put a catalytic converter and you will see pike at 20

 

[kooofie]

i have a high flow cat

 

[rmgedon69]

are you running a test pipe?

 

[kooofie]

cpe downpipe full high flow cat...corksport catback

 

[MSMS3]

Define "fully bolted" please, beyond above post. Specific combos of mods work well together and others do not. I'd need to know not only generic descriptions but specific manufacturers and your setup.

Also please be very precise on how your define "spike" including its duration, when it is taking place, at what rpm's, what gear(s), etc.

Also tell us what the ambient conditions are - temps, altitude, etc.

Need a LOT more info to be any help. I might not be able to help, but I can do little to nothing with the small amount of info so far.

BTW: Your facebook page seems to be locking up my computer. Is there anything about your car there we should know?

 

[axisboldaslove]

take ur boost controller off.........or u will eventually blow...

 

[Darth Vader]

He doesn't have a boost controller...other than the stock one...that's the problem. Try an MBC hooked to manifold pressure and see if you can tame the spike. I did, by hooking as above and ungating it.

I am CAI,TIP,Forge,CSDP+RP. I hold 17-ish all the time. I think that's purty safe.

 

[coyfish]

Try getting a tune ?

 

[axisboldaslove]

He doesn't have a boost controller...other than the stock one...that's the problem. Try an MBC hooked to manifold pressure and see if you can tame the spike. I did, by hooking as above and ungating it.

I am CAI,TIP,Forge,CSDP+RP. I hold 17-ish all the time. I think that's purty safe.

MBC won't help it will still spike

 

[axisboldaslove]

Try getting a tune ?

can't tune around boost spikes either

 

[bykeryder4life]

^bulls*** you cant tune around a boost spike. OP get a tune by someone who knows what they are doing and you wont spike more than 1psi over target, or put on a MBC and that will stop it if you plumb it right

 

[Darth Vader]

^^+ Eleventy-billion. Boost spiking and creep, brought on by my CS DP+RP, were both finally reigned in by an MBC plumbed right. 17 pounds rock solid with 6 datalogs to prove it. Goddamit, there's some dumb-s*** "information" here.

 

[Biggs]

so whats a MBC again?

I had mine protuned to 17 but its been spiking to 20 almost every time.

 

[Darth Vader]

Manual Boost Controller. Hooking it up on these cars is different than the zillions of other turbo cars on the planet (of course). Hooking it up to the stock compressor nipple will have you spiking like there's no boost control.

What worked for me was using the Turbosmart Boost T, hooking it to manifold pressure at the BPV line and ungating it.

 

[bykeryder4life]

^yup. +1 there

 

[kooofie]

08 true red speed 3GT 20% tint
***************-Diamond Sponsorship

Cobb SRI- SU Edition
Cobb TIP
Cobb AP Stage 2+TMIC 93 V.105
Cp-e Dp+High Flow Cat
TMW Shifter+Bushings
SU Rear Engine Mount Poly
SU Boost Tubes Red
Hks SSQV VTA
Densio Step Colder Plugs .028
Corksport Catback
Corksport Midpipe Cat-less (Selling)
Jdm HID Fogs
B/O Kit
Removed Side Moldings/Badges
LED's All Around
Rally Armor UR Mud Flaps
Prosport Boost Gauge/Cpe Pod

Sitting in my trunk...
N2MB WOTBox/2step
PG Manifold


so thos are my mods im running a stage 2 ots map from cobb.....it set to 20psi i think but on my gauge i boost spike like 22-23 so if i was to get a manuel boost controller and set it to 21 will it still spike over????