99 w/ Garrett GT2554R
09-21-2019, 11:11 PM
#1
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99 w/ Garrett GT2554R
223 HP, 205 lbft torque
1999 BP4W stock, 140k miles
5 speed transmission + 4.3 LSD
Garrett GT2554R
Kraken manifold + full 3 inch exhaust with cat, resonator and big "MT.net Magnaflow" 12578
FM Intercooler and silicone piping
ID 725cc injectors
DW 100 fuel pump
GM LS coils
MS3 Basic
Running a 7 psi wastegate spring with closed loop EBC. Peak boost was around 10 psi.
It's not huge power, but the car is a lot of fun now.
Last edited by tenthe; 09-22-2019 at 12:36 AM.
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09-22-2019, 12:00 PM
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Have you pulled the butterfly plates out of the IM? I agree, nice #'s! That torque curve is nice and flat. I will be changing out my JDM 1.6 for a '99 BP4W in future, with similar turbo bits, so encouraging post for me to see!
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09-22-2019, 01:24 PM
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I didn't modify the intake manifold at all. Good luck with your swap! How come you opted for the BP4W rather than a VVT engine?
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09-22-2019, 06:50 PM
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Thanks! I didn't want to push the torque much farther and risk breaking my 5 speed. I'll likely pick up a 6 speed and a 3.63 diff just to have more of a safety margin.
I didn't modify the intake manifold at all. Good luck with your swap! How come you opted for the BP4W rather than a VVT engine?
I didn't modify the intake manifold at all. Good luck with your swap! How come you opted for the BP4W rather than a VVT engine?
The wiring harness for my 99 NB6 will work with the BP4W ( cam pos. and crank pos.) without any messing with, and as I have a Megasquirt2 I don't think I can control the VVT function. (I could easily be wrong on that, but from my reading so far, think I need the MSM3 to do VVT). Seems like each, BP4W and BP6D have pros and cons, as far as port angle, etc. with the outcome being a wash between the two heads potential in stock form, decided to look for a '99-00 engine. Yossi just emailed with a 63K running engine that I thought was a great deal. My present NB6 runs great, and made 186HP on a Mustang, so I could be smart, and leave well enough alone, but what fun is that?
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