stock tune with evo injectors

[mattsGSTeclipse]

I'm just wondering if it would be safe to drive my car with a stock tune with a walbro 190(rewired) and Evo 550cc injectors if I run a moderate boost level? I have to have my car at a car show in one week and I'm not sure if I will be able to have a datalogger by then and have the car tuned right.

 

[Gamble97]

WTF do you mean stock tune? You can't just slap in new injectors w/o a chip or safc or ecmlink or something.

 

[rEclipserGST]

WTF do you mean stock tune? You can't just slap in new injectors w/o a chip or safc or ecmlink or something.

He is correct, your going to be running rich. So i would suggest putting the 450s back in... or getting a SAFC for cheap.

 

[viperlp01]

Ya you got me confused too. Answer to the question is yes but you will be richer than donald trump and you will be bogging but i would not suggest you do that

 

[DSMunknown]

WTF do you mean stock tune? You can't just slap in new injectors w/o a chip or safc or ecmlink or something.

I did. Evo 8 MAS and Evo 8 560cc injectors & no problems thus far.


http://www.dsmtuners.com/forums/151843613-post41.html
http://www.dsmtuners.com/forums/tuning-engine-management/325191-evo-3g-mas-2g.html
http://www.dsmtuners.com/forums/151843638-post12.html


But I agree that installing higher-flowing injectors without anything else isn't wise.

 

[mattsGSTeclipse]

sorry, I'd just like to be able to drive my car to HIN next weekend that I have already paid for. So I should just put the stock injectors in and run it? I've got a SAFC but I don't have a logger yet.

 

[DSMunknown]

How proficient are you with the SAFC? I would highly recommend a logger, to be on the safe side.


I added some links for your convenience.

 

[Gamble97]

I did. Evo 8 MAS and Evo 8 560cc injectors & no problems thus far.


http://www.dsmtuners.com/forums/151843613-post41.html
http://www.dsmtuners.com/forums/tuning-engine-management/325191-evo-3g-mas-2g.html
http://www.dsmtuners.com/forums/151843638-post12.html


But I agree that installing higher-flowing injectors without anything else isn't wise.

The injectors flow 21% more than stock and the evomaf/3g maf flows 30% more than a 2g maf. So your a/f raios are a bit off I'm sure.

 

[DSMunknown]

I'll throw up a log whenever I get a chance.

 

[DSMunknown]

The injectors flow 21% more than stock and the evomaf/3g maf flows 30% more than a 2g maf. So your a/f raios are a bit off I'm sure.

Where did you get 21%?

Using simple calculations, 450 + 21% will only give you 544.5cc injectors, which isn't even close to the actual flow capabilities of the Evo 8/9 injectors. Anyone who's been paying attention remembers this post showing the proven tested results.


http://www.dsmtuners.com/forums/151500768-post14.html


Now assuming we were to aim for the 580cc mark, a ~28.89 percentage would need to be added to the 450 capacity. The result would be 580.05.

As a second trial, aiming for instead the 590cc mark, a ~31.11 percentage would need to be added to the 450 capacity. The result would be 589.995.

And finally, striving for the 600cc mark, a ~33.34 percentage would need to be added to the 450 capacity. The result would be 600.03.

Say we were to assume the same 30% increase that the Evo MAS sees, you would get a nice safe result of 585, well in the realm of the Evo's proven flow numbers.