Boost #s

[122 Vega]

I installed my Blitz Dual Turbo Timer today with it's built in boost guage. It has a peak/hold function that lets you see your highest boost level. Mine was 0.54. Thats in Pascals. It equal 7.93 psi. I have not been able to reproduce this number, it may have been a fluke. The number I get consistently is 0.48/7.056 psi. I have just my CAI on with no other mods, it is cold out today and raining. I wasn't able to hook up to do any Gtech testing, but last night I pulled a 6.83 0-60 mph which is slighly faster than stock quotes. No quarter mile times yet. I am putting together a website for the MSP as a sister page to my Vega stuff at www.geocities.com/kiva75 it will profile all my mods exactly, including some interesting things I discovered today while tearing into the car to install the boost guage.

Britt and Nikki

 

[JasonH]

Cool, cool, cool. You rock. Any pictures of the install of the turbo timer/boost gauge? Was it difficult? Any more pictures of your car?

 

[122 Vega]

BOV pics

Now, why can't we mess with this? You can see the silver tamperproof seals right next to the BOV, but we could just replace the whole tube with a new one.

 

[JasonH]

Almost looks factory.

Just a "T" inserted in the line from the bypass valve? Is that line where the ECU gets its boost data? Interesting.

 

[122 Vega]

Jason, you're too quick!

I was editing my post while you replied to it, so I will repost the pic so others know what you were asking about. Yes, it is a line that goes to the intake manifold and provides vaccuum/boost information to the BOV. The BOV then in turn regulates the "wasting" if pressure gets too high (which you can reall hear with the CAI).

 

[JasonH]

Don't confuse the compressor bypass valve with the wastegate, however. Somewhere there should be a pressure line/sensor that tells the ECU how much boost the car is running. That would be the one to fool after you adjusted the wastegate to allow more boost.

 

[Limited Edition]

Re: BOV pics

Now, why can't we mess with this? You can see the silver tamperproof seals right next to the BOV, but we could just replace the whole tube with a new one.

122 Vega..
that's a good picture of the piping uninstalled....why did you take it off for? Just to show us!? Anyway, i never noticed the tamper proof clamps there....i thought all the tamper proof clamps were only used in the turbo/intercooler area..
good to know something new!
You thinking about changing the BOV too?

good to see you modifying your MSP!!
keep up the good work

 

[Pirana]

Keep it up!

 

[LinuxRacr]

I will probably be installing my boost controler in the same spot you put your Turbo Timer.

One thing to note: If you are planning on changing out the Bypass Valve for BOV, keep in mind we have a Mass Air-Flow Sensor. What this means is that the air it meters needs to stay in the system. So if you get a BOV that dumps to the atmosphere, you may have issues with idle, and a crappy running motor. To rule that out, get a Recirulating BOV/Bypass valve like the stock one, or like the FM Sequential. I have tested this before, and have found that when I vent to the atmosphere, my engine runs like crap.

 

[122 Vega]

I'm not planning on changing the bypass valve, I just took it out so others could see how easy it could be done.

Britt

 

[chdesign]

ok so let me get this straight .5 bar stock boost level and its only producing 170 hp at the crank???? Geez guys i will be pushing 198 WHP with a little under .5 bar......seems to me the MSP needs alot of work to get to potential.....like new turbo, IC, downpipe...ect....ect......

 

[mmalatesta]

So what is the max boost you can set at a safe limit on the car?

 

[chdesign]

teh MSP ECU has a cutout at 10 psi

 

[70]

Interesting...Only 7 psi or so.

 

[mmalatesta]

what do you mean 7PSI

 

[70]

what do you mean 7PSI

Originally posted by 122 Vega
...(snip) The number I get consistently is 0.48/7.056 psi (snip)...

That is what I mean...

 

[chdesign]

He means the stock MSP only runs 7 psi. And only makes 170 hp at the crank while a Spool stage 1 non-intercooler turbo kit on a ES motor makes 165 whp about 190 crank hp on a mere 4.5 psi.....i have a feeling that T25 even though it may be ball bearing goodness is actually limiting the potential alot....what am I saying it IS!!!

 

[122 Vega]

chdesign,

I suppose by looking at your list of mods, that if I were to add the cams, the cam gear, the external wastegate, the DSM BOV, additional injectors with controller and 2.5" exhaust to my MSP I would certainly see those numbers rise.

The Mazda propaganda before the release of the MSP was showing 6.9 psi, so I think it's dead on. My Mazdaspeed mechanic at the dealership told us that it had been turned down to 5.2. But that is apparently not the case. Unless my CAI made that big of a difference which I know it didn't.

Britt
www.geocities.com/kiva75

 

[Kooldino]

Interesting...Only 7 psi or so.

What was the amount of boost that you swore they ran? There was a big debate about it?

 

[chdesign]

The main difference in my setup man is the turbo. The T25 used in the MSP is a tiny turbo and starts to blow really hot air towards the 7-8 psi mark. The Blitz K26 i'm using is alot bigger turbo. more lag but alot more power. I think the best gains the MSP owners here are going to see is if they change out the turbo to something like a 60-1 trim T3 turbo or a larger T3 even a T28 you are going to see alot of gains just due to a higher compessor effiiciency.