More Boost?
#1
More Boost?
I have a Begi S4 with a 2860rs, largest intercooler in begi terms (~20x10x2.5), 550's, Xede, and a Turbosmart E-Boost 2 boost controller on my 2002. I have consistently been seeing 11-12.5 max psi even with my boost controller set at up to 16 through 30 lbs for over boost shutdown and set points. Shouldn't this turbo be more than capable of making much more than 12.5 psi in a 4th gear wot run? Not that I'll go much higher because of stock internals, but just very curious why my peak boost isnt responding no matter where my boost controller is set at. Any ideas?
#2
First, I know nothing of ebc. But yes that is way more capabable than 12psi.
Can you feel a difference in power at the diference in boost settings. You may want to try a friends gauge. But if there is no power difference.
Check for leaks. I would think the tubing would blow off if leaking.
You might want to get a $10 manual controller until summer when the temp stabilizes. Just my .02.
Can you feel a difference in power at the diference in boost settings. You may want to try a friends gauge. But if there is no power difference.
Check for leaks. I would think the tubing would blow off if leaking.
You might want to get a $10 manual controller until summer when the temp stabilizes. Just my .02.
#3
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I have a Begi S4 with a 2860rs, largest intercooler in begi terms (~20x10x2.5), 550's, Xede, and a Turbosmart E-Boost 2 boost controller on my 2002. I have consistently been seeing 11-12.5 max psi even with my boost controller set at up to 16 through 30 lbs for over boost shutdown and set points. Shouldn't this turbo be more than capable of making much more than 12.5 psi in a 4th gear wot run? Not that I'll go much higher because of stock internals, but just very curious why my peak boost isnt responding no matter where my boost controller is set at. Any ideas?
If I were you I wouldn't go over 12 psi on stock internals;especially on an NC! (isn't the 2002 an NC?)
#4
First, I know nothing of ebc. But yes that is way more capabable than 12psi.
Can you feel a difference in power at the diference in boost settings. You may want to try a friends gauge. But if there is no power difference.
Check for leaks. I would think the tubing would blow off if leaking.
You might want to get a $10 manual controller until summer when the temp stabilizes. Just my .02.
Can you feel a difference in power at the diference in boost settings. You may want to try a friends gauge. But if there is no power difference.
Check for leaks. I would think the tubing would blow off if leaking.
You might want to get a $10 manual controller until summer when the temp stabilizes. Just my .02.
Thanks for the reply. There is no difference in power and the gauge is reading accurately. We had set peak boost to 30psi on the controller on a dyno with the same hp results. (My boost pressure lines up with what the dyno measured) Good idea on the MBC, I might try that. Any other thoughts?
#9
if its cold out I have seen as much as 4psi boost creep so its definitely possible you are running on wastegate. the fact that you turn it up as much as possible and nothing happens is a big give away. believe me, even on a small turbo, if you turn up the controller all the way, that ****** will spike so high you will most likely break something. i'll bet the vacuum lines from your controller are either not hooked up properly or leaking somewhere.
#13
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Courtesy of braineack. I just ordered and got one from ebay but he's got a $10 special on his website: NXS Racing Division
#17
Every good turbo enthusiast should carry along with him a cheap and simple ball-and-spring MBC in the glove box for situations just like this. Even a year after I went EBC, I still had my $15 eBay Voodoo MBC mounted to the fenderwell exactly as I had before. No matter what, that thing was good for 14psi for any test I might need.
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