Begi Intake Manifold
#323
Boost Czar
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iTrader: (62)
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,688
Total Cats: 4,113
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I have determined that spool is definitely faster. I finally got my 2.25" gutted cat out of the mix and got my real test pipe on this weekend.
My EBC is still tuned for cold weather, where I took a few hundred rpms out of the target DC% so i didn't have spikes in < 60*F weather. If you notice it's spiking a little so i need to back it out a touch more on a 60*F day. So that for sure means it's faster as well as the fact im hitting 15psi at 3500 before it was closer to 3800-3900 on this same stretch of road in 4th gear.
The one thing I found odd is the DC%, I know I have a new FPR. It's supposed to be 1:1 like the stock and i can set the idle pressure basically. I need to run the gauge into the cabin and see what pressure I'm getting in boost, cause it must be over 70psi...
I've had to take close to 20 points out of my +4K fuel cells, so I'm guessing all is still kosher, just weird to see a max of only around 55% DC.
anyways:
![](http://www.boostedmiata.com/logs/intakemanifold_boost_again.png)
looks like it'll be the 10th or 11th when we dyno, brad is out of town this week.
My EBC is still tuned for cold weather, where I took a few hundred rpms out of the target DC% so i didn't have spikes in < 60*F weather. If you notice it's spiking a little so i need to back it out a touch more on a 60*F day. So that for sure means it's faster as well as the fact im hitting 15psi at 3500 before it was closer to 3800-3900 on this same stretch of road in 4th gear.
The one thing I found odd is the DC%, I know I have a new FPR. It's supposed to be 1:1 like the stock and i can set the idle pressure basically. I need to run the gauge into the cabin and see what pressure I'm getting in boost, cause it must be over 70psi...
I've had to take close to 20 points out of my +4K fuel cells, so I'm guessing all is still kosher, just weird to see a max of only around 55% DC.
anyways:
![](http://www.boostedmiata.com/logs/intakemanifold_boost_again.png)
looks like it'll be the 10th or 11th when we dyno, brad is out of town this week.
#324
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Nice! I want one. Where did you get the parts to make yours?
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