Wobbling supercharger hesitation - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 05-24-2006, 08:54 AM   #11
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If you determine it'* the fuel pump, please ensure you order and replace the strainer sock and fuel filter at the same time.
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Old 05-24-2006, 06:10 PM   #12
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You know, the same thing happend to my car,when i romp it, my engine/supercharger sounds boggie. My friend told me that it was my gas. He was right because i was pumping regular unleaded and the engine was boggie. Once i put premium unleaded, my supercharger wasnt boggie no more,try it and tell me what happends
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Old 05-24-2006, 06:15 PM   #13
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I've been putting in premium gas everytime.... Im gunna try seafoam.. hopefulley a little difference.. if nothing then probally use a fuel pressure guage.

1)Anyone know the benefits of a fuel pressure regulator/

2)what type of fuel pressure gauge is compatible with my car.
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Old 05-24-2006, 06:18 PM   #14
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Quote:
Originally Posted by beckster
I've been putting in premium gas everytime.... Im gunna try seafoam.. hopefulley a little difference.. if nothing then probally use a fuel pressure guage.

1)Anyone know the benefits of a fuel pressure regulator/

2)what type of fuel pressure gauge is compatible with my car.
What kind of seafoam? They make many products.

Fuel pressure regulators are great. You get no fuel without one. That'* why we all have them.

Actron FP gauge from Autozone compatible with GM vehicles. NAPA should have it too.
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Old 05-24-2006, 07:49 PM   #15
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Alex Purchased the fuel injector cleaner.

So what Regulator should I go with.
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Old 05-24-2006, 07:55 PM   #16
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What'* wrong with your regulator?

OEM AC Delco regulator if you actually needed one, but whaddya say we actually check your fuel pressure first, see if that'* a problem, then if it is, try to figure out if it'* the pump, filter, or FPR.
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Old 05-24-2006, 08:06 PM   #17
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Of Course... the reason I ask is because I wondered why there are so many different regulators and if having more PSI means I need a better regulator
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Old 05-24-2006, 10:02 PM   #18
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Your PCM (computer) is expecting a 3.0bar regulator. The fuel curves and injector firing in the programming is expecting this combination.

I'm the only Series 1 so far that I know of that has had to boost the fuel pressure by pump and regulator, and that'* because I've done quite a bit of modifying on the top end. There MIGHT be one other that had to do this. I'm not sure.

There is no power to be gained by raising your fuel pressure. There are potential problems that can arise if you do it and don't need it.
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Old 05-27-2006, 12:25 AM   #19
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I just did a modification to extend the CAI partially out of the engine bay and it seems to have improved the problem. I just JUST completed it so I will have to do further testing to see if it improved it in the long term.
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Old 05-27-2006, 01:56 AM   #20
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The location or design of your CAI will have no effect on hesitation or 'wobbling' as the topic author orignally posted.

A hotter temperature around your intake point will reduce power across the curve, not make it stutter and variable.
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