boosters please advise

[hayula]

i didn't think a car would start to pulling so nicely as my MSP nwo is just because it got cold outside. now i'm finally starting to feel like im in a sports car. i tap the gas at 3000rpm in 4th and the car goes from 55 to 75 in a blink. the engine sounds more "high performance" now too... i could get used to this

now my question is, what PSI would you say is needed (stock, unflashed engine) to keep this new found feeling the rest of the year? 8psi would do it?

 

[t3ase]

Not in response to the real question but please quit being boost happy in 4th and especially 5th gear. You're putting a HUGE load on the engine.

 

[servoeyes]

I understand where you're coming from, t3ase...but at stock boost, if it pops because of boosting in 4th or fifth gear, then Mazda didn't design the sytem for longevity and they'll replace it under warranty...bottom line.

i agree with you, though...especially with the bad fuel maps it's a good way to get detonation.

Now...to answer the inital question...I have no idea. Until I can afford to pop the motor, the boost is staying stock. This is already the fastest car I've owned, so I won't worry about it. When it becomes my track beast, then I'll worry about it!

 

[SoniCraze]

You can up the boost, but i think you will lean that heat soak is gay. On cold nights i love my car, then as i drive around for awhile it starts feelin slower, and slower.....etc..

On warm nights, it feels FAST right away, then dies down by the 2nd light...

Nothing a ION FMIC wont fix tho ey..

 

[Dexter]

Not in response to the real question but please quit being boost happy in 4th and especially 5th gear. You're putting a HUGE load on the engine.

Dude, i am at stock boost and i love downshifting from 5th to 4th and boosting on the highway. If my engine blows because of that, Mazda can honestly go **** themselves.

 

[mspdfreak]

Yes yes, this car LOVES the cold! That dense air does wonders. It's 24 degrees outside, and I notice a big-time difference in these temps! Sorry, California and Florida people!

 

[jersey_emt]

Car pulls wonderfully when it's 10 degrees

 

[mspdfreak]

:wtf: > ?

 

[mazdaspeedpower]

yeah, the car loves cold weather. But to answer the question, whatever boost you decide to up it to, lower it back down to stock when it's cold outside, cause you'll feel the same kinda gain, and that will put alot of stress on the engine. Now the engine might pop at 8 or 9psi in 4th 5th, and those chances increase if it's cold. Whatever you decide to do, be careful.

 

[DiscreetSpeed]

i didn't think a car would start to pulling so nicely as my MSP nwo is just because it got cold outside. now i'm finally starting to feel like im in a sports car. i tap the gas at 3000rpm in 4th and the car goes from 55 to 75 in a blink. the engine sounds more "high performance" now too... i could get used to this

now my question is, what PSI would you say is needed (stock, unflashed engine) to keep this new found feeling the rest of the year? 8psi would do it?

10 psi is nice for stock.

 

[Eric-BlackMSP]

10 psi is nice for stock as long as you dont boost it while in 4th or 5th gear, since the increase load, bad maps, and uped psi WILL cause detination.

Discreet, please you know all this and yet you dont mention it in your posts. I think thats why people get all over you and stuff.

I would personally leave it at stock boost with a catless DP. The turbo will spool much faster and the car will pull harder. Just remember about heat soak, your car will start to run crappy after a while, this is becase of the side mount intercooler. You can fix this with a front mount intercooler.

Be careful with boosting.

-Eric

 

[DiscreetSpeed]

Discreet, please you know all this and yet you dont mention it in your posts. I think thats why people get all over you and stuff.
-Eric

haha dude read my title below my screen name.
if anyone wants my opinion PM and i will anwser

 

[Eric-BlackMSP]

I know you will answer, but it would much more helpful if you could just post it with your current post, or in your sig. I think you would be a much better member and people wouldnt call you out all the time. And it would just make the forum a much better learning enviroment.

Well thats what I would do, thanks .

-Eric

 

[M=SP^2]

I love the car in frigid weather, really making me think hard about getting that FMIC....it just flies in third now.

 

[Garrett]

Water/Alchohol injection is the ticket, just keep the stock intercooler and run a nozzle that sprays into the intake tract after the IC. You intake temps will stay ambient and you will be flying all year long. Of course you might have to modify fuel delivery and timing a bit.

 

[BremertonMSP]

Water/Alchohol injection is the ticket, just keep the stock intercooler and run a nozzle that sprays into the intake tract after the IC. You intake temps will stay ambient and you will be flying all year long. Of course you might have to modify fuel delivery and timing a bit.

No problem! We all know how easy it is to modify the fuel and timing on our cars! LOL!!

 

[Garrett]

Doesn't seem that hard. Just get a fuel correction piggy back system but mainly it would be the timing that needs to be adjusted.

Anyways. Water injection is a little hard to do on any car without a fully tunable interface but it is the holy grail of keeping intake temperatures down.

I was seeing nearly 99 Celsius with my stock intercooler now with my big IC and the cold whether I stay a consistent 27 Celsius. The problem I was having with lower intake temps was that my boost readings were up due to the fuel/air mixture being more potent. So,I would worry about air/fuel ratios causing your car to lean out if the boost is already turned up. On piston engines, pre-ignition is not too bad of a problem but it can be. To detonate on a rotary is death, so my ratios are tuned conservative in the ballpark of 10 to 1.

Garrett

 

[KyRaceFan]

Garret, thanks for the suggestions, but piggybacks just dont work great on our cars... Theres alot of good info on here as to why, you just gotta search for it a bit.

10psi will feel nice in warm weather, but, you will get heatsoak during intown driving, highways you wont.

 

[doggman]

so if you are cruzing in 5th (on the express way) then you down shift into 4th or maybe 3rd (depending on how fast you are going) that is called boosting? also that puts a lot of strees on your engine even at stock boost?
-dave

 

[jflo]

boosting is when you're above 0 psi. the stress that t3ase is talking about is the gear ratios that the car is at will cause the engine to work hard to push the car to the speed u want