Please help me limit my boost! - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Prefabbed Turbo Kits A place to discuss prefabricated turbo kits on the market
Sponsored by:
Sponsored by:

Reply
 
 
 
LinkBack Thread Tools
Old 10-30-2011, 11:22 AM   #1
Senior Member
Thread Starter
 
Join Date: Nov 2007
Location: somewhere in NoVA
Posts: 550
Total Cats: -1
Default Please help me limit my boost!

Good day all,

So I've been really out of things for a while... been travelling all over the world for work and parked all of my cars for the past 6 months. Now home and was really feeling ambitious lastnight.

Worked on my Adaptronic Select install to make the car better. Set the jumpers to allow the factory ECU to handle the idle and now I love my car again!

Well, long story short, I also finally installed an Electronic Boost Control Solenoid and just need some good advice.

In the past with the stock wastegate, I would see peaks at 12 PSI and normally sustained boost runs at 10 PSI. With the EBC in place, I can now do a lot more with the peak boost.

Just wondering what you guys suggest for a highest sustained boost level for my configuration?

I am running a BEGi 2554 "S-2" kit with the intercooler #1, Adaptronic ECU, 600 cc injectors, IK22 plugs, 3" turbo back exhaust, Spek 6-puck clutch, and AEM UEGO...

Right now I have the knock detection ready to pull when it feels detonation and I even have the headphones pluged into the adaptronic to listen for knock... but seeing that I just blew up my volvo the other night... I am feeling wary of my skills. (Bent 2 of the 5 rods) :(

Anyhow, I would love to know what you guys suggest for this little turbo. If there is any suggestions on duty cycles on the wastegate actuator for given RPMs and load ranges... I'm open for that.

Right now I am simply running target boost at 190 KPA at 100% duty... just to be safe.

Thanks all and good to be back!
Cheers,
Matt
Prospero is offline   Reply With Quote
Old 10-30-2011, 03:49 PM   #2
Elite Member
 
Join Date: Mar 2010
Location: Detroit
Posts: 1,524
Total Cats: 27
Default

Isn't 190kpa like 27lbs of boost?
flounder is offline   Reply With Quote
Old 10-30-2011, 03:51 PM   #3
Senior Member
Thread Starter
 
Join Date: Nov 2007
Location: somewhere in NoVA
Posts: 550
Total Cats: -1
Default

Quote:
Originally Posted by flounder View Post
Isn't 190kpa like 27lbs of boost?
I was drinking a bottle of Vodka brought back from Minsk... Took the Russian idea of go-big or go-home a little too far

Yes, tho... that is what I have it set at. For now... I'm just barely touching the gas till I have it all sorted
Prospero is offline   Reply With Quote
Old 10-30-2011, 04:05 PM   #4
Elite Member
iTrader: (1)
 
Join Date: May 2009
Location: Jacksonville, FL
Posts: 4,685
Total Cats: 216
Default

Quote:
Originally Posted by flounder View Post
Isn't 190kpa like 27lbs of boost?
More like 13
Full_Tilt_Boogie is offline   Reply With Quote
Old 10-30-2011, 04:32 PM   #5
Elite Member
 
Join Date: Mar 2010
Location: Detroit
Posts: 1,524
Total Cats: 27
Default

Using a standard kilopascal to psi coversion calculator I got 190kpa=27.557 pounds per square inch.
flounder is offline   Reply With Quote
Old 10-30-2011, 04:40 PM   #6
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,367
Total Cats: 1,331
Default

Quote:
Originally Posted by flounder View Post
Using a standard kilopascal to psi coversion calculator I got 190kpa=27.557 pounds per square inch.
27.557psia = 12.8psig. MAP sensors read absolute pressure, and boost gauges read gauge pressure.
Savington is offline   Reply With Quote
Old 10-30-2011, 04:47 PM   #7
Senior Member
iTrader: (8)
 
Join Date: Jun 2010
Location: Navarre, FL
Posts: 1,127
Total Cats: 39
Default

190 KPa absolute pressure
atm pressure 101Kpa approx

89 Kpa above atm
89 Kpa to psi: 12.9

probably good to run up to about 14-15psi on that thing
aaronc7 is offline   Reply With Quote
Old 10-30-2011, 06:07 PM   #8
Elite Member
iTrader: (11)
 
chicksdigmiatas's Avatar
 
Join Date: Apr 2008
Location: Texas, 'Murica
Posts: 2,505
Total Cats: 7
Default

Yeah, I think you are about where you need to be with it. If you would allow me to preach, I don't think you need to be wringing the hell out of your car when you just nuked your other one. That being said, if you are like me and will anyway, I would leave boost about where it is as long as you have no knock. Oh and to elaborate on what Sav was saying..... 0 kpa equals 100%ish Vacuum. 100 KPa equals atmospheric. (should be about 100 atleast. This is what you breath.) Anything above 100 or 101 as some people do is considered boost. If you turn your ignition on, not your engine, your map should read somewhere near 100kpa while the engine is off.
chicksdigmiatas is offline   Reply With Quote
Old 10-30-2011, 07:51 PM   #9
I'm Miserable!
 
Join Date: Jun 2009
Location: albany, ga
Posts: 1,869
Total Cats: 3
Default

atmo is whatever pressure reading currently in the space your car takes.
sea level is around 14.7~psia\101kpa~ if you live higher alt or weather changes may also change it. I"ve seen from 99 to 101 locally, I"ve also start at 100 at my house and only 30 minutes away its gone down to 99.

so basically note what current baro is and anything above that is considered boost.
Techsalvager is offline   Reply With Quote
Old 10-30-2011, 10:52 PM   #10
Elite Member
 
Join Date: Mar 2010
Location: Detroit
Posts: 1,524
Total Cats: 27
Default

flounder is offline   Reply With Quote
Old 10-30-2011, 11:07 PM   #11
Senior Member
Thread Starter
 
Join Date: Nov 2007
Location: somewhere in NoVA
Posts: 550
Total Cats: -1
Default

Thanks for the input y'all FWIW... I didn't kill my other car, irony is my EBC actuator had a line pop off in a boosted run. She overshot like mad but by the time I backed off... I had the death knock :(

Soo for now I will leave my boost just where it is

Thanks again all! Cheers,
[email protected]

Quote:
Originally Posted by chicksdigmiatas View Post
Yeah, I think you are about where you need to be with it. If you would allow me to preach, I don't think you need to be wringing the hell out of your car when you just nuked your other one. That being said, if you are like me and will anyway, I would leave boost about where it is as long as you have no knock. Oh and to elaborate on what Sav was saying..... 0 kpa equals 100%ish Vacuum. 100 KPa equals atmospheric. (should be about 100 atleast. This is what you breath.) Anything above 100 or 101 as some people do is considered boost. If you turn your ignition on, not your engine, your map should read somewhere near 100kpa while the engine is off.
Prospero is offline   Reply With Quote
Old 10-30-2011, 11:55 PM   #12
Senior Member
iTrader: (6)
 
Join Date: May 2009
Location: San Francisco
Posts: 989
Total Cats: 23
Default

Just for safeties sake, at least ziptie or preferably hose clamp the ebc lines and other important vacuum hose on the Miata. I just use zipties and make sure all the vacuum lines are on barbed fittings.
wittyworks is offline   Reply With Quote
Old 10-31-2011, 12:05 AM   #13
Elite Member
iTrader: (11)
 
chicksdigmiatas's Avatar
 
Join Date: Apr 2008
Location: Texas, 'Murica
Posts: 2,505
Total Cats: 7
Default

Quote:
Originally Posted by wittyworks View Post
Just for safeties sake, at least ziptie or preferably hose clamp the ebc lines and other important vacuum hose on the Miata. I just use zipties and make sure all the vacuum lines are on barbed fittings.
Indian Head Shellac is what all the RX7 tt guys used. No ugly zip tie, but it holds like a ****. You litteraly have to carve it off the nipple with a razor knife. But yes, I zip tie all my lines too, since I got bags of zipties for free, and I am cheap/lazy.
chicksdigmiatas is offline   Reply With Quote
Old 10-31-2011, 12:26 AM   #14
Elite Member
iTrader: (2)
 
Join Date: Jan 2007
Location: Los Angeles, CA
Posts: 8,782
Total Cats: 119
Default

Your a *****. Run more boost bitch
Faeflora is offline   Reply With Quote
Old 10-31-2011, 12:38 AM   #15
Senior Member
iTrader: (8)
 
Join Date: Jun 2010
Location: Navarre, FL
Posts: 1,127
Total Cats: 39
Default

you're*
aaronc7 is offline   Reply With Quote
Old 10-31-2011, 12:52 AM   #16
Elite Member
iTrader: (2)
 
triple88a's Avatar
 
Join Date: Apr 2006
Location: Chicago, IL
Posts: 9,131
Total Cats: 598
Default

You're*
triple88a is offline   Reply With Quote
Old 10-31-2011, 01:54 AM   #17
Elite Member
iTrader: (2)
 
Join Date: Jan 2007
Location: Los Angeles, CA
Posts: 8,782
Total Cats: 119
Default

Stfu I am speaking in internet coloquial pidgen grammar retardism. FOAD
Faeflora is offline   Reply With Quote
Old 10-31-2011, 11:04 AM   #18
y8s
2 Props,3 Dildos,& 1 Cat
iTrader: (8)
 
y8s's Avatar
 
Join Date: Jun 2005
Location: Fake Virginia
Posts: 19,038
Total Cats: 407
Default

Quote:
Originally Posted by Faeflora View Post
Stfu I am speaking in internet coloquial pidgen grammar retardism. FOAD
*pidgin
y8s is offline   Reply With Quote
Old 10-31-2011, 12:17 PM   #19
Senior Member
Thread Starter
 
Join Date: Nov 2007
Location: somewhere in NoVA
Posts: 550
Total Cats: -1
Default

Quote:
Originally Posted by chicksdigmiatas View Post
Indian Head Shellac is what all the RX7 tt guys used. No ugly zip tie, but it holds like a ****. You litteraly have to carve it off the nipple with a razor knife. But yes, I zip tie all my lines too, since I got bags of zipties for free, and I am cheap/lazy.

+1 on the Indian Head Gasket ****... I've been using that for freeze plugs and threaded thingies for years... forgot all about using it on my vacuum lines Thanks for the nudge!
Prospero is offline   Reply With Quote
Old 10-31-2011, 12:19 PM   #20
Senior Member
Thread Starter
 
Join Date: Nov 2007
Location: somewhere in NoVA
Posts: 550
Total Cats: -1
Default

Quote:
Originally Posted by Faeflora View Post
Your a *****. Run more boost bitch
I will... i will...

First I need to fix the Volvo so I can blow another engine

Anyone wanna help me install RSI rods on a 5 Cylinder next month? It'll be fun!
Prospero is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 59 Yesterday 09:00 PM
LucaCarMods's Boosted Dutch Miata Build! LucaCarMods Build Threads 11 02-14-2016 07:13 AM
Back to Stock Part Out!! Turbo Parts, MS2 Enhanced 01-05, Suspension, and MOAR! StratoBlue1109 Miata parts for sale/trade 16 10-02-2015 10:39 AM
Going back to stock. Need some 1.6 parts. Trent WTB 2 10-01-2015 01:15 PM
Bad head gasket or ? shooterschmidty Engine Performance 8 09-30-2015 11:28 PM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 03:32 AM.