DIY Turbo Discussion greddy on a 1.8? homebrew kit?

Is my buddy being dumb?

Old 02-20-2010, 09:59 AM
  #1  
Newb
Thread Starter
 
00mx5se's Avatar
 
Join Date: Feb 2010
Location: MA
Posts: 31
Total Cats: 0
Default Is my buddy being dumb?

My friend Wilbert got his 99 Mx-5 this morning and he's going out later today to pick up the turbo. He plans to run it on 5psi. when I told him about what you guys said about MSPNP he told me his dad said he wouldn't need it because it's running such low boost... He's a really close friend and I don't want to see his car go up in smoke, should I try and stop him or will his car be ok? I do trust his dads judgement he's good with engines (helped me build my turbo sc2).
00mx5se is offline  
Old 02-20-2010, 10:06 AM
  #2  
Elite Member
iTrader: (7)
 
turotufas's Avatar
 
Join Date: Jul 2009
Location: Gainesville,Fl
Posts: 3,304
Total Cats: 7
Default

Pretty much all engines from the factory can handle up to 8psi but its the fuel management. Your buddy should at least have a fpr.
turotufas is offline  
Old 02-20-2010, 10:35 AM
  #3  
Newb
Thread Starter
 
00mx5se's Avatar
 
Join Date: Feb 2010
Location: MA
Posts: 31
Total Cats: 0
Default

fuel pressure regulator?
00mx5se is offline  
Old 02-20-2010, 10:41 AM
  #4  
Elite Member
 
Sparetire's Avatar
 
Join Date: Dec 2008
Location: Colorado
Posts: 1,642
Total Cats: 36
Default

https://www.miataturbo.net/forum/t10821/#post51313
Sparetire is offline  
Old 02-20-2010, 10:57 AM
  #5  
Elite Member
iTrader: (7)
 
turotufas's Avatar
 
Join Date: Jul 2009
Location: Gainesville,Fl
Posts: 3,304
Total Cats: 7
Default

Originally Posted by 00mx5se
fuel pressure regulator?
Yarp. Just ask your friend to join up here so he can learn the error of his ways.
turotufas is offline  
Old 02-20-2010, 12:48 PM
  #6  
Senior Member
iTrader: (2)
 
Project84's Avatar
 
Join Date: Jul 2008
Posts: 597
Total Cats: 0
Default

I take it your name is Wilbert?

https://www.miataturbo.net/forum/t44045/
Nice, he has the same boost goal as you.


I'm just calling it as I see it. Read the stickies.

You had a turbo saturn and you don't know what a FPR is?
Project84 is offline  
Old 02-20-2010, 04:47 PM
  #7  
Newb
Thread Starter
 
00mx5se's Avatar
 
Join Date: Feb 2010
Location: MA
Posts: 31
Total Cats: 0
Default

"You had a turbo saturn and you don't know what a FPR is?" just making sure, I don't remember all the acronyms. and yes he has somewhat of the same goal. I know what your implying and no I'm not asking for me and yes I'm reading the stickys. it's to late anyway hes already started installing.
00mx5se is offline  
Old 02-20-2010, 04:56 PM
  #8  
Newb
Thread Starter
 
00mx5se's Avatar
 
Join Date: Feb 2010
Location: MA
Posts: 31
Total Cats: 0
Default

and my name is Chris...
00mx5se is offline  
Old 02-20-2010, 05:01 PM
  #9  
AFM Crusader
iTrader: (19)
 
olderguy's Avatar
 
Join Date: Oct 2004
Location: Wayne, NJ
Posts: 4,666
Total Cats: 336
Default

A '99 has a returnless fuel system so an AFPR would not be in the cards. At that low boost level, try looking into larger injectors, control for them, and timing retard.
olderguy is offline  
Old 02-20-2010, 05:26 PM
  #10  
:(
iTrader: (7)
 
magnamx-5's Avatar
 
Join Date: Jul 2006
Location: nowhere
Posts: 8,255
Total Cats: 4
Default

to notice any apreciable horsepower he will need a way to manage **** botom line.
magnamx-5 is offline  
Old 02-20-2010, 07:37 PM
  #11  
I EAT CUM
iTrader: (6)
 
Turbo_4's Avatar
 
Join Date: Sep 2008
Location: Redneck, Texas
Posts: 1,198
Total Cats: 0
Default

If he just wants a turbo for ***** and giggles and to say that his car is turbo-ed then go for it, just slap that **** on there and go. If he wants to maintain a reliable car and have it last for years to come, fork over some cash on a legit management.
Turbo_4 is offline  
Old 02-20-2010, 08:49 PM
  #12  
Elite Member
iTrader: (7)
 
turotufas's Avatar
 
Join Date: Jul 2009
Location: Gainesville,Fl
Posts: 3,304
Total Cats: 7
Default

Originally Posted by olderguy
A '99 has a returnless fuel system so an AFPR would not be in the cards. At that low boost level, try looking into larger injectors, control for them, and timing retard.
Learn something new errday.
turotufas is offline  
Old 02-20-2010, 09:19 PM
  #13  
Newb
Thread Starter
 
00mx5se's Avatar
 
Join Date: Feb 2010
Location: MA
Posts: 31
Total Cats: 0
Default

I really don't think it's going to last long, first thing he does is hops in the car and revs it up to set off the bov...
00mx5se is offline  
Old 02-20-2010, 09:45 PM
  #14  
Elite Member
iTrader: (13)
 
cjernigan's Avatar
 
Join Date: Oct 2006
Location: Atlanta, GA
Posts: 8,091
Total Cats: 7
Default

It won't last long. He needs some sort of fuel management. He could get away with a FM voodoo box at that low boost level with stock injectors but for the money he should atleast go with a DIYPNP. It will allow him to have full control of fuel, ignition timing, electronic boost control, knock detection, launch control and many other things.
cjernigan is offline  
Old 02-20-2010, 10:00 PM
  #15  
Junior Member
 
Tw34k's Avatar
 
Join Date: Nov 2009
Location: Jax Fl
Posts: 459
Total Cats: 31
Default

Or... he can just learn the hard way.

"starts the car and revs to hear bov".... No hope for this one.

His dad may be somewhat educated but that wont stop his (sounds to be ricer) son from making some dumb *** choices.

Yes you can get away with low boost apps if you are aware and smart about it, but its ALOT more dangerous.
Tw34k is offline  
Old 02-20-2010, 10:08 PM
  #16  
Elite Member
iTrader: (13)
 
cjernigan's Avatar
 
Join Date: Oct 2006
Location: Atlanta, GA
Posts: 8,091
Total Cats: 7
Default

The miata has no way of sensing boost so it doesn't know that it should be adding more fuel. On the early cars a AFPR was used to add more fuel, on the later cars you either run a piggy back system that "tricks" the ECU into adding more fuel, or you run a proper engine management system and control everything the right way.

Make sure he's running 93.
cjernigan is offline  
Old 02-20-2010, 10:18 PM
  #17  
Elite Member
iTrader: (24)
 
kotomile's Avatar
 
Join Date: Oct 2006
Location: Monterey, CA
Posts: 7,537
Total Cats: 42
Default

Jesus dude, show him this thread at least. This is a bunch of people experienced with turbo Miatas saying exactly what he must do to save his engine and make power (which is the entire point of turbocharging, right?).

I bet the engine was cold when he was revving to hear the BOV too, yikes. Anyone out there need a rebuildable NB engine?
kotomile is offline  
Old 02-20-2010, 11:05 PM
  #18  
Junior Member
iTrader: (6)
 
gianic's Avatar
 
Join Date: Mar 2007
Location: Greece
Posts: 349
Total Cats: -14
Default

Explosions are fun.
gianic is offline  
Old 02-20-2010, 11:57 PM
  #19  
Elite Member
iTrader: (5)
 
disturbedfan121's Avatar
 
Join Date: Jan 2007
Location: Freehold, NJ
Posts: 1,552
Total Cats: -2
Default

where are you located? I'd love to get a 99 shell......


trade plus cash for my already turbo NA? lol
disturbedfan121 is offline  
Old 02-21-2010, 12:25 AM
  #20  
Elite Member
iTrader: (11)
 
chicksdigmiatas's Avatar
 
Join Date: Apr 2008
Location: Texas, 'Murica
Posts: 2,497
Total Cats: 0
Default

Originally Posted by Turbo_4
If he just wants a turbo for ***** and giggles and to say that his car is turbo-ed then go for it, just slap that **** on there and go. If he wants to maintain a reliable car and have it last for years to come, fork over some cash on a legit management.
Problem solved, way cheaper.

chicksdigmiatas is offline  

Thread Tools
Search this Thread
Quick Reply: Is my buddy being dumb?



All times are GMT -4. The time now is 06:30 PM.