Which EBC to get?

[derekb727]

My bday is coming up and i want an electronic boost controller. im only running a steady 4 psi and a spike to about 7 right now and would like to up it to around 8 with little spike. wat is a good ebc that you can get that has the most features and works the best from your experience?? why would you recommend it?


thanks

derek

[BOOSTR]

I'd recommend that you adjust your WGA rod length so that you will at least have the correct amount of stock boost, 6.9 psi. Another slight turn at that point should give you 8 psi and save you from spending the $$$ on an EBC for basically 1 more psi of boost.

Your is too long if you are only getting 4 psi. I'll try to measure mine as I have always had 6.9psi. I use a dual stage boost controller for when I want more(mbc).

Check out this pdf for how to adjust the WGA rod
Mazdaspeed Protege Wastegate Actuator TSB;
http://www.msprotege.com/members/Cap.../mspwgatsb.pdf (http://www.msprotege.com/members/Captain%20KRM%20P5/mspwgatsb.pdf)

[derekb727]

so i need to twist it in for more boost? another reason i want an ebc is bacause i dont want the boost to spike....will an ebc stop the spike??

[derekb727]

ok...so about 3 hrs later i have the WGA and adjusted it shorter. i went one turn is that going to be enough to get 8psi??

[BOOSTR]

Moot point but I never got a chance to measure mine for you. Your going to have to test it out to see where its at. I don't know how many turns you need to twist. Better to go in 1/4 or 1/2 turns as you get closer though.

[magnumP5]

Stock boost is ~6 psi so something is definitely not right if you're only seeing 4 psi. As far as EBC's go I've heard that they actually spike worse than MBC's. I have a Perrin MBC set at 10 psi and at WOT I will see a quick spike up to 11 psi. For adjusting the wastegate actuator length, I'm sure you're fine with one complete turn. I don't recal the exact thread pitch/length of the actuator arm but one turn is easily less than 1/16". That should really equate to that much of a difference.

[derekb727]

ok fixed it...had to take the exhaust mani off and everything to get to it. it was a real bitch. i had to twist it in 1 1/2 turns in and it holds at a steady 7 psi. i beleive i have fixed it but i still want to get it up to 10 psi. i had a joeP and it just wasnt workin for me so i sold it. any others that are workin for you guys? if you wouldnt recommend an ebc wat would you recommend around that price range??

[SeR_Cyclops]

dude, you should have just called me lol you can remove the WGA without taking off the turbo.

[BOOSTR]

Turbo XS DSBC here. Goes wherever I set if for stage 2. Stage 1 stays stock 6.9 psi. There is an ebc for sale on here for less than I paid for my mbc 5 years ago.

[Ryoga28]

Got the Gizzmo ms-ibc. Used to have a greddy ebc for awhile but it crapped out on me.

[Fudgie]

I've been running a greddy type s for 4 years. Its been rock solid and easy to use.

[SeR_Cyclops]

does it spike or does she hold steady?

[derekb727]

does it spike or does she hold steady?


spikes to about 9-10 and holds steady at 6.5 psi from 3rd gear all the way through 5th. also when i was in fifth at 137mph it just acted like it hit a wall is this fuel cut or somthing?? i was thinking about a DSBC but do you have any kind of substantial spike?

[SeR_Cyclops]

man if i were you i would not raise the boost untill you had a ems and a wideband.

[derekb727]

okok...i still dnt kno wat to get next though for around 250. i can get a custom 3"dp for less than 200 and that would give me 3" all the way back i am pretty sure i will get an ems for christmas. so many decisions and i dnt really no wat to get....uhhhh

[BOOSTR]

spikes to about 9-10 and holds steady at 6.5 psi from 3rd gear all the way through 5th. also when i was in fifth at 137mph it just acted like it hit a wall is this fuel cut or somthing?? i was thinking about a DSBC but do you have any kind of substantial spike?

Nope. You ran out of gear. Its your car but don't push it too hard or long under boost going that fast. Search the forum for a picture of BrianMP5T's engine(before rebuild) and you will see why.

[magnumP5]

Nope. You ran out of gear. Its your car but don't push it too hard or long under boost going that fast. Search the forum for a picture of BrianMP5T's engine(before rebuild) and you will see why.
Nope, we have the gear-space to reach speeds above 137 mph. Do a search, as there is a thread that heavily debates the existence of a speed limiter and in there it dicusses what the theoretical top speed of the car is based on gearing. Many people swear we have a speed limiter but I strongly believe we don't. However, I have never taken the car above 110 mph. That speed is stupid enough and more than enough to get you killed.

[SeR_Cyclops]

80 mph is enough to kill you :D

[BOOSTR]

No need to search as I know a final drive ratio of 4.105 will not get you beyond that level. If it does more power to you and that was not the point of my post for OP. Not trying to debate theories or anything else.

[magnumP5]

I'm not trying to drag this on but here is the post from another thread:


This is using a 205/45/17 tire

Top speed = R / T * C
R = RPM (7200)
T = Tranny ratio
C = Circumference of your tire
((((205mm * .45) / 10 / 2.54) *2) + 17in) * pi = 76.227 in = 6.352 ft

205mm is the width of the tire
.50 is the aspect ratio, which is the relationship between the tire's height and it's width
/ 10 is to convert from mm to cm
/ 2.54 is to convert from cm to in
* 2 for both sides of the rim
17 is the size of the rim
the total Diameter of the tire is 24.263 in
using the formula C = D pi

1st Gear
T = 3.307 (1st gear) * 4.105 (final gear) = 13.575

2nd Gear
T = 1.842 (2nd gear) * 4.105 (final gear) = 7.561

3rd Gear
T = 1.310 (3rd gear) * 4.105 (final gear) = 5.378

4th Gear
T = 0.970 (4th gear) * 4.105 (final gear) = 3.982

5th Gear
T = 0.755 (5th gear) * 4.105 (final gear) = 3.099


1st
R / T = 530.387 RPM (at the wheels) * 60 min = 31,823.204 RPH (at the wheels)
Top speed = 31,823.204 RPH * 6.352 ft = 202,140.994 ft/hr = 38.284 mph

2nd
R / T = 952.255 RPM (at the wheels) * 60 min = 57,135.300 RPH (at the wheels)
Top speed = 57,135.300 RPH * 6.352 ft = 362,923.423 ft/hr = 68.735 mph

3rd
R / T = 1338.788 RPM (at the wheels) * 60 min = 80,327.259 RPH (at the wheels)
Top speed = 80,327.259 RPH * 6.352 ft = 510,238.750 ft/hr = 96.636 mph

4th
R / T = 1808.137 RPM (at the wheels) * 60 min = 108,488.197 RPH (at the wheels)
Top speed = 108,488.197 RPH * 6.352 ft = 689,117.027 ft/hr = 130.515 mph

5th
R / T = 2323.330 RPM (at the wheels) * 60 min = 139,399.806 RPH (at the wheels)
Top speed = 139,399.806 RPH * 6.352 ft = 885,467.570 ft/hr = 167.702 mph

http://www.mazdas247.com/forum/showthread.php?t=86800&highlight=top+speed

Using GPS and Radar machines, a 215/45/17 tire is the most accurate in relation to our speedometers.

As you can see, with enough power and stock gearing these cars could theoretically reach almost 168 mph. If his car is cutting aroun 137 mph then he is having other issues (fuel cut due to temperature, leak, etc.)

[SeR_Cyclops]

it has been getting chilly so i bet he is getting fuel cut because of the temps.

[magnumP5]

it has been getting chilly so i bet he is getting fuel cut because of the temps.
At 10 psi, so am I - usually around 6000-6500 RPM.

[SeR_Cyclops]

i use to get fuel cut when it got cold. but now where my WGA is bad it starts sputtering as soon as she hits boost. i cant belive my ATP WGA only lasted 20,000 miles.

[BOOSTR]

I seriously doubt in actuality that any MSP with stock cylinder head and valvetrain will allow 130.5 in 4th gear, let alone 167.7 in 5th. Swap in the gearing to achieve the MS3 5th-6th final drive ratio of 3.350 and that would be a different story. But with 4.105 FDR its not going to happen out side of theory land.

[sandspeed]

I would recommend a nicely made mbc for a stock turbo msp, but once you change to a larger turbocharger I would suggest using an ebc! When my car was running ... hahha long story ....it had a boostscience (http://www.boostsciences.com/) mbc that worked great and held 12psi to 6500.
Good luck and keep the boost at the stock level until you get and afc or ems