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#1
Apr 23 2013 11:47am
As mentioned in a previous thread, we need a dedicated turbocharger/ supercharger thread.

The purpose of this thread is to discuss theoretical and practical knowledge regarding forced air induction systems.

Feel free to ask any questions, no matter how stupid you may think them to be. No judgement will be made. This is strictly a place for information for those who want it.

Feel free to bring up any forced air induction topic and we will discuss the principles to the best of our knowledge.

Keep on boosting!

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#2
Apr 23 2013 11:56am
Ill be the first guinie pig i guess to get the topic started.

I have a 2011 WRX stage 2 with a custom tune.

I am tuned for 19.5 lbs of boost. I have an Stri boost gauge and when i am at WOT my gauge is only reading 15lbs and then creeps down to maybe 14lbs. The BOV and WG are both stock. Im wondering if anyone can explain why i would be loosing boost?



Another question is how rich is to rich when it comes to a/f. Right now i am running 14 give or take while cruising but when WOT i am dipping into the high 10's. I see alot of threads where thier cars are in the mid 11's WOT.

I know it is better to be rich then lean but what is considered to rich?
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#3
Apr 23 2013 01:52pm
Quote (SinfulDude @ Apr 23 2013 10:56am)
Ill be the first guinie pig i guess to get the topic started.

I have a 2011 WRX stage 2 with a custom tune.

I am tuned for 19.5 lbs of boost.  I have an Stri boost gauge and when i am at WOT my gauge is only reading 15lbs and then creeps down to maybe 14lbs.  The BOV and WG are both stock.  Im wondering if anyone can explain why i would be loosing boost?



Another question is how rich is to rich when it comes to a/f.  Right now i am running 14 give or take while cruising but when WOT i am dipping into the high 10's.  I see alot of threads where thier cars are in the mid 11's WOT. 

I know it is better to be rich then lean but what is considered to rich?


Check for possible boost leaks. (vacuum lines, hose connections for your intake piping, exhaust leaks)

You'd have to ask your tuner about the a/f if there's a reason why he placed it at 10. (Maybe for a safer tune? Who knows, but they will)

14.7 is obvious stoic on a running car. High 10/11 is ideal for boosted cars.
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#4
Apr 23 2013 03:36pm
Quote (Touhou @ Apr 23 2013 03:52pm)
Check for possible boost leaks. (vacuum lines, hose connections for your intake piping, exhaust leaks)

You'd have to ask your tuner about the a/f if there's a reason why he placed it at 10. (Maybe for a safer tune? Who knows, but they will)

14.7 is obvious stoic on a running car. High 10/11 is ideal for boosted cars.


Good information here.
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#5
Apr 23 2013 03:59pm
if i decide to go with my lq4 with ls3 heads/intake and e85 which turbo should i look at? was thinking a borg warner 76 mm of some sort but now im thinking i may just bump it up to a 83mm. the goal is 650 at the wheels tops
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#6
Apr 23 2013 04:08pm
Quote (TeaRs- @ Apr 23 2013 04:59pm)
if i decide to go with my lq4 with ls3 heads/intake  and e85 which turbo should i look at?  was thinking a borg warner 76 mm of some sort but now im thinking i may just bump it up to a 83mm. the goal is 650 at the wheels tops


... looks like im going to get alittle more out of my road race car to beat you = P
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#7
Apr 23 2013 04:10pm
Quote (justin_618 @ Apr 23 2013 05:08pm)
... looks like im going to get alittle more out of my road race car to beat you = P


lol nothing like a ford vs chevy shootout
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#8
Apr 23 2013 04:14pm
Are turbo kits practical for motorcycles? Specifically a Vtwin Buell. Is the power to cost ratio worth it?
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#9
Apr 23 2013 04:28pm
Quote (TeaRs- @ Apr 23 2013 06:10pm)
lol nothing like a ford vs chevy shootout


Can i come when i get my 5.0 supercharged :P
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#10
Apr 23 2013 04:29pm
Quote (Sopranos @ Apr 23 2013 05:28pm)
Can i come when i get my 5.0 supercharged :P


only if you want to get beat like justin
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