what parts are needed to increase boost for Stillen Supercharger
 

As of right now I have the following parts/upgrades on my car:

• Stillen supercharger
• topgunz air to air upgrade
• walbro 520
• ID1050x injectors
• CJM twin fuel pump
• CJM S1.SE return system
• Motordyne cats and catback exhaust
• Stillen headers

I've read over 50 pages on the A2A thread and cant get a definitive answer on what parts are needed. I'm looking to get around 500-550hp. Also I will be running 91. Also Seb is currently tuning my car. Thanks for the help!

How much power are you planning to make ?
That would tend to determine what upgrades are needed



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good point and I was just thinking about adding that. Would be happy to be around 500-550. Will be running 91 octane unless you guys recommend other wise.

13 psi is about the max you'll be able to run on 91 octane. With the 9lb pulley and a 2.85 sc pulley, my car made 12.86 psi and 586whp on e85 with the same upgrades that you have. I can't remember what my 91 octane numbers were but was probably a little over 500.

I would go flex fuel. 91 and e85.

You list a single walbro 520 but then you show a CJM twin pump. Why would you have a twin pump set up with a single pump?

I got the twin fuel pump assembly for a pretty good price. Also when I took out my stock pump assembly the rods were already broken. So instead of buying a new nissan oem assembly I just bought the twin assembly for a good price.

And when you want to go for big power (and you will), you'll need twin pumps. :rofl2:

After reading spooler's thread I dont think that will be the case. I dont feel like replacing the block lol.

You'd never be making enough boost to lift the heads.

Haven't our engine's been known to do that around 12/13 psi

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Not sure but mine had no issues at 16.5.

That's good to know

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It depends on what fuel your using. Boost pressure is knock limited.

Here in uk its 99 octane
I believe that's like your 91

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Single 520 paired with 1050 is way overkill for 91. Not good to run rich in low boost.