problem with boost spike - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

xhdriver · 09-13-2002, 10:26 PM

stock turbo on a red top, i have a manual boost controller, and the boost will spike up about 3-4 psi before settling at what i set it at. does this happen to anyone, and what i sa solution. does this happen with electronic boost controllers?, what could be the problem?

mazdog240 · 09-14-2002, 07:15 PM

I have heard of this happening with lots of manual boost controllers never got a good explaination on why it happens and how to stop it. But most quality non "fuzzy logic" boost controllers should reduce any spiking to almost never and improve spool up and response.  I will be using the Blitz SBC-iD for my upcoming swap.
good luck.

xhdriver · 09-15-2002, 07:36 PM

180sxjdm · 12-04-2003, 03:53 AM

I have installed MBCs on stock SRs and they alll seem to have boost spike. Once it was set at .7 bar and it would spike to .9 bar then lower to .7 bar. It seems weird but never got a real answer to it.

IvanS13 · 12-04-2003, 08:54 AM

Heh... mine does the same thing. I have a Turbo XS MBC and it spikes all the time, its the biggest POS. Cant wait to get my Profec-B

Frank@MVP · 12-04-2003, 09:13 AM

Yeah, you should really look into an electronic boost controller. My MBC always spiked and my old school ProfecB, while not the most consistent, doesn't spike at all.

09-13-2002, 10:26 PM	#1
xhdriver Zilvia Member Join Date: Jan 2002 Location: 6 Posts: 273 Trader Rating: (0) Feedback Score: 0 reviews	stock turbo on a red top, i have a manual boost controller, and the boost will spike up about 3-4 psi before settling at what i set it at. does this happen to anyone, and what i sa solution. does this happen with electronic boost controllers?, what could be the problem? __________________

09-15-2002, 07:36 PM	#3
xhdriver Zilvia Member Join Date: Jan 2002 Location: 6 Posts: 273 Trader Rating: (0) Feedback Score: 0 reviews	bump __________________

12-04-2003, 03:53 AM	#4
180sxjdm Leaky Injector Join Date: Apr 2003 Location: Los Angeles, CA Age: 41 Posts: 112 Trader Rating: (0) Feedback Score: 0 reviews	boost controller spiking I have installed MBCs on stock SRs and they alll seem to have boost spike. Once it was set at .7 bar and it would spike to .9 bar then lower to .7 bar. It seems weird but never got a real answer to it.

12-04-2003, 08:54 AM	#5
IvanS13 Join Date: Jan 2003 Location: NoVA Age: 40 Posts: 27 Trader Rating: (0) Feedback Score: 0 reviews	Heh... mine does the same thing. I have a Turbo XS MBC and it spikes all the time, its the biggest POS. Cant wait to get my Profec-B __________________ VIRGINIA IS FOR HSTLERS JSPEK - JDM Enthusiast Community Forum. Team FU - Family first. Cars second. TFU Stunner since '99.

12-04-2003, 09:13 AM	#6
Frank@MVP Join Date: Oct 2003 Location: Fort Worth, Tx Age: 46 Posts: 15 Trader Rating: (0) Feedback Score: 0 reviews	Yeah, you should really look into an electronic boost controller. My MBC always spiked and my old school ProfecB, while not the most consistent, doesn't spike at all. __________________ *Current Silvia Specials* 10k RPM Fossil Watch MVP Motorsports Over 3,000 Performance Parts Online Phone: 817-439-4888 Master Distributors for RPS, Veilside, HKS, Greddy, Blitz, Brembo, Stoptech, Powerhouse Racing, AEM, Volk, Tein, Bomex, and so many more... [email protected]

09-14-2002, 07:15 PM	#2
mazdog240 Leaky Injector Join Date: Jun 2002 Posts: 88 Trader Rating: (0) Feedback Score: 0 reviews	I have heard of this happening with lots of manual boost controllers never got a good explaination on why it happens and how to stop it. But most quality non "fuzzy logic" boost controllers should reduce any spiking to almost never and improve spool up and response.  I will be using the Blitz SBC-iD for my upcoming swap. good luck.