MAP signal problems
#21
On the topic of the inline fuel filters, I went to HD and they did not have any fuel filters for lawn mowers at all. Went to OSH and found only one - intended for a 1/4" or 5/16" ID line... kinda big but I bought it as I couldn't find any others. Anyone have a better source for these that works with smaller vac line?
#23
y8s- what are you using to control boost? Your boost is stupid flat. Mine kinda goes up and down 3-4kPa during any given pull. Probably doesn't matter.
Also- any reason to use a restrictor w/ a big line vs. a small line? I ran a big line and had poor map values at idle. Smaller line fixed it.
Also- any reason to use a restrictor w/ a big line vs. a small line? I ran a big line and had poor map values at idle. Smaller line fixed it.
#26
Tour de Franzia
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I have my wastegate vac-line on my compressor housing...should I move it somewhere better like the brake booster line, or intake plenum?
On my other cars I ran it off the intake plenum with a profec-b and never had this problem.
On my other cars I ran it off the intake plenum with a profec-b and never had this problem.
#27
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y8s- what are you using to control boost? Your boost is stupid flat. Mine kinda goes up and down 3-4kPa during any given pull. Probably doesn't matter.
Also- any reason to use a restrictor w/ a big line vs. a small line? I ran a big line and had poor map values at idle. Smaller line fixed it.
Also- any reason to use a restrictor w/ a big line vs. a small line? I ran a big line and had poor map values at idle. Smaller line fixed it.
...
the external wastegate doesn't hurt either. incidentally, I have a 3.8psi wastegate spring and run just shy of 10 lbs of boooooost.
#30
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it's a dual port and I am using only the top port (TiAL). turbo>mbc>top port.
and since the diaphragm that holds the WG closed is more area than the port the exh gas passes through, it doesn't overwhelm the spring. at least at this boost level.
and since the diaphragm that holds the WG closed is more area than the port the exh gas passes through, it doesn't overwhelm the spring. at least at this boost level.
#35
Ah, yes. That's how it's usually done. That's how mine is setup. From my research on it though, the most ideal setup for maximum spool and boost control is to reference the top port to manifold, then use your MBC as it's installed to adjust the boost. And to use a spring that's close to your target boost. Tight spring + top port referenced to manifold = that bitch is shut till the MBC says open.
Last edited by patsmx5; 01-28-2009 at 01:51 PM.
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