13g to mhi small 16g what boost

[evo9mrtt]

Over the last three weeks iv done a few mods to my auto Dsm. Including short route front mount, machv hard intake pipe, Evo 8 maf, fic 650cc injectors, Walbro 255 pump, 2g exhaust mani, tubular recirc o2 housing, and a EPROM manual ecu with key diver chip that's burned for the injectors, pump, maf, and stock boost guage to read knock. Still have the stock exhaust also.

Now my 13g is choking due to the increased airflow and is getting tired. I have a real mhi small 16g lying around I would like to put on. My question is this, what boost level could I run, safely, with this setup. My buddy had almost this exact setup and was running 20psi and had 0 issues. Now I know every car is different. But I figure if I watch the knock, and boost I should be ok. Any input? Or anyone had this setup done and have good results? Trying to get the car ready for the kbpi car show! Thanks guys/gals!

 

[Fourdoor]

What up Ryan!

The compression seems low because we are up at a mile high. My low miles stock 2g had 130 across the board, and 6 bolts have lower compression.

His compression is fine, strong motor

Ahhhh, that explains it! I didn't realize Arvada was also high altitude like Denver.

Keith

 

[evo9mrtt]

Ya were pretty high up here! Lol so needless to say our air isn't the best . Anybody have any info for swapping a s16g from a 2g onto a 1g? Including lines? I have the oil lines covered. I'm just worried about the water lines

 

[TJCTalon]

Just buy some 3/8 hose and the 2g water lines will work. You may have to bend the lines a little like I did. Make sure no hose is touching anything, I melted a hole in a turbo coolant line one time.

 

[Fourdoor]

Doesn't being high altitude also effect the max boost pressure you can run? A car at sea level running 14.3 psiG of boost has 30.0 psiA entering the engine. Couldn't someone in Denver where the "normal" air pressure is 12.1 with the same setup run 16.9 psiG?

It seems like that since an engine in reality only cares about how many molecules of air are entering the engine and injects the appropriate amount of fuel for that amount of air a car that runs well at 14 psi at sea level would run about the same running 17 psi in Denver. Your off boost performance and spool up would be affected adversely, but peak power would be about the same wouldn't it?

Keith

 

[evo9mrtt]

Hell ya good deal! 16g is comin. And ya the air up here has a huge effect on overall psi levels! It's rediculous!