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 What's my BP's Redline??? 
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Joined: March 12 2006, 1:27 AM
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Post What's my BP's Redline???
I always thought that the BP engine's redline was 7K. But when I rev, it redlines at 7.5K. Does this have to do with the fact that my transmission is an F series or something else?

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December 09 2011, 1:34 AM
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Joined: March 30 2006, 9:55 PM
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Post Re: What's my BP's Redline???
7000 rpm, you can rev an engine past redline on a stock ECU

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December 09 2011, 2:36 AM
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Post Re: What's my BP's Redline???
Ya, that's not the redline, that's the rev limiter you're hitting. Most cars don't have the limiter right at Redline, they're usually a bit after.

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1992 Mazda Mx-3 GSR - 2.5L KLZE : Award Winning Show Car & Race Car ['02-'09] (Retired)
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December 09 2011, 7:46 AM
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Post Re: What's my BP's Redline???
Yah the B6 rev limiter is 6500 and the BP is 7200 I believe. but the stock RPM gauge is not that accurate. It was great when i swapped over the BP10 ECU onto my B6 :) fun times

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December 09 2011, 3:55 PM
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Post Re: What's my BP's Redline???
Your hydraulic lifters will not keep up after 7.5K RPMs, if you want to rev more convert to solid lifters and cams. Also the stock cams are designed for mid power range, they drop power after 6.5K rpms. I have brought my BP to 8.3k RPMS with my old ITB set up, but it really didn't do any good since I lost power due to floating valvetrain.


December 09 2011, 4:01 PM
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Post Re: What's my BP's Redline???
oh ok, I thought on my B6 the rev limiter was also the redline at 6.4K, maybe i remembered it wrong.

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-1992 MX-3 RS w/BP Swap Tropical Emerald Metallic "Lucky" 2005-2012 *REST IN PIECES*
Worklog: http://www.mx-3.com/phpBB3/viewtopic.php?f=46&t=78176

-2003.5 MAZDASPEED Protege #882 Blazing Yellow Mica "Lemon Drop" 2012-2015 SOLD!

-2003 MAZDASPEED Protege #1186 Spicy Orange "Debbie" 2014-2015 SOLD!

-1980 Toyota Corolla Green 2014-present

-2002 Lexus IS 300 Solar Yellow 2015-present


December 09 2011, 7:52 PM
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Post Re: What's my BP's Redline???
mx-3_4evr wrote:
Your hydraulic lifters will not keep up after 7.5K RPMs, if you want to rev more convert to solid lifters and cams. Also the stock cams are designed for mid power range, they drop power after 6.5K rpms. I have brought my BP to 8.3k RPMS with my old ITB set up, but it really didn't do any good since I lost power due to floating valvetrain.


Unless your boosted :) and they definitely can if you go to a stiffer valve spring. The only real benefit would be to get a little extra speed out of your gearing. I topped out at like 124 or something and swapped to the bp10 ecu and was able to reach 136mph. My newest BP i am using 62lb titanium valve springs designed to rev the hydraulic valve train to 9K but my cams quit producing power at 8200. so my rev limiter is not set to 8500.

@ im2bad4ya - Stock the B6 is 6500 and the BP is 7200. Really not wise to go beyond 7500 like mx-34evr said if you are using stock valve train. there are ways to mod the ecu to cut out the rev limiter all together but I don't suggest it ;)

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95' AWD MX-3 RST - (work log - http://www.mx-3.com/phpBB3/viewtopic.php?f=46&t=73765 )
94' GS - KLZE DD (work log - http://mx-3.com/phpBB3/viewtopic.php?uid=2713&f=46&t=79063&start=0 )
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December 12 2011, 12:37 PM
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