If you are having your evo tuned by a company that will modify the ecu and anything else that needs modding and put your pride and joy on a dyno when all their work is complete to check if all is ok.and the installed tried and tested package is working as it should......
why then does it stand to be a cardinal sin if there is no boost gauge present on a car that's been modified?...what purpose does it serve?....

If these perameters have all been pre-set by the tuning company you bought the package from what is the point of messing up a perfectly good interior with add ons that to me seem to serve no purpose than to draw thieves
attention....

Could someone give me a GOOD reason why a boost gauge on a tuned car is considered,by most, to be so essential?

Please....no standard answers

 

Boost guage lets you know how your car is running today and great for tunning. If mitsubishi deliver it's ralliart ecu you probably wont' need it but for most it's a must.

SRT-4 have an autometer special for boost. It's like dodge is asking you to install a boost controller. Dont' you want to know how many psi's are you cranking out of your boost controller? Turn of the knob for more hp! For us most of our power comes from Timeing and fuel map. Even if you have a uni-chip or xede it'll be a great tunning tool.

 

I guess you have to tune it daily to have maximum power. It's nice to see what boost are you running or an EGT guage to see how's your fuel mixture. If i'm running stock or ralliart ecu i just want a temp guage so the OEM floor mount guage is ok but too embarrassing to have boost guage that down low. Don't seem logical except for the fact that it doesn't look pasted on like most aftermarket boost guage.

 

But if the boost is set....and the power is acceptable...say 330 flywheel horsepower...and you have seen what bar/psi of boost that set up is producing because of the session on the rolling road when you purchased the package....surely there is no reason to monitor the engine/needle flicking to 1.3 bar/19 psi everytime you plant your foot...that would get boring

If , however the boost can move for any reason...surely you will not have time to prevent damage happening if you did notice the boost soar to 35psi.....and thats if you notice it.

and if once tuned...the engine can display these erratic characteristics, of boosting all over the place..whats wrong? as it is clear the standard set up does not display this obvious fault, otherwise we would have heard a lot more reports of blown standard motors......

it seems there is no real reason for a boost gauge, as I am sure if it were essential
would have installed one stock,...I suspect that it is one of those things that has always been done and no one has stopped to ask why.......

 

A boost guage is like any other guage, it allows you to monitor what is happening under the hood. didn't include an oil pressure guage either, does that mean we just cross our fingers and assume the oil pressure will never ever drop?

Imagine a crimped rubber line to your wastegate, or a dry-rotted hole in it... what happens to your boost then? How do you diagnose why the motor either melted down or suddenly has no power?

I don't want to be an automotive ostrich, burying my head in the sand while hoping everything is just fine. I want to know exactly what is happening under the hood of my car, especially if the engine has been tuned/modified from stock. Color me paranoid.

 

2Cool, i think that is the answer he is looking for. Monitoring for future probs as stated. Answered my questions too.

 

I must agree with 2cool.
My GSX blew the intake hose from my IC to the turbo (not that I knew that at the moment)
Everytime I throttled it, it would take off, then the boost gauge would skyrocket (buried, if you're familiar with the factory +/- boost gauges) then sputter..
After a few tests, I attributed the sputter with the boost, and Voila!, noticed the clamp on my hose was off. I was boosting into the air..

 

Thanks for the input guy's....I guess I'm convinced....what boost gauge is best? electronic or manual......I have heard electronic as the manual ones can cause problems if the tube gets niked or damaged

 

I have to say I think they look pretty cool too. Boost builds with revs, then when your BOV kicks, the needle sweeps all the way 'round the dial. But yeah, it's just precautionary to make sure everything is on the up and up.

 

You mean electronic or mechanical. The mechanical version requires you to route the vacuum tube to the gauge, which you will probably mount in the passenger cabin. I would prefer to use an electronic gauge, even though they are generally more expensive.

 

Thanks claudius.....that really was the kind of response I was after....makes sense

 

Being a pilot of a twin turbo charged, 6-cyl multi engine piston airplane, I can't tell you how important engine guages are. Simply put: the more the better. I realize the EVO is not a high performanced air plane and doesn't require 1/1000th of the maintenance; however, it is a high performanced turbo engine, and if you want it to last forever you better be able to monitor your motor and catch a problem before it even has a chance to do damage.

 

What do you do if you are in your plane and a gauge tells you there is a real problem like no oil pressure.....? put your head between your legs and kiss your butt goodbye?....cos you aint pulling over to the side of the road...thats for sure....my point is most times the damage is already done and theres jack you can do about it ....so whats the point in the gauge??????

 

If you're overboosting, the ECU will be killing your timing in an attempt to save your car, but to you the car may just feel a bit funny. There won't necesarily be damage now, but if you continue to ride it hard without knowing there's a problem, you will likely cause damage down the road. Not every failure is an instant catastrophe.