Safe PSI on my Evo3 Big 16G Setup

[zoran316]

I have a 98 tsi awd with recently rebuilt tranny and act 2100.

Ok so I was wondering if hitting and holding about 23-25 PSI is safe on my car, these are the mods I have. The mixture has been tuned by a professional using wideband o2 sensor but will go for all wheel dyno pretty soon, I just need to know if the stock motor will take this kind of boost.

Evo 3 Big 16 G
3" turbo back exhaust/o2 housing
hks intake
custom fmic
255 walbro
safc-2
lucas 550cc's
hks bov
boost/egt gauges
turbo xs MBC

please let me know if 23-25 psi with this setup is fine or will i blow sumthing very soon. thanks.

 

[Groomz]

550cc/min is not enough for 25psi. Get some 660cc/min or turn it down to 20psi.

 

[zoran316]

Thanks for the info, I kinda thought that too, getting 660's is no problem and then getting the shop to tune the car with them is fine but will 23-25 psi with 660's be safe on my motor?
What kind of crank HP are we talking here with 20 PSI and then with 25 PSI...???

 

[CanadianTSi]

23-25 PSI would be ok to run at the track, but not all the time on the street. Run 20 on the street and you should be fine.

Also I don't think your 2100 is gonna like 23-25 pounds, next time go for the 2600

 

[zoran316]

that's what I thought too, I will run around 20 on the street.
What kind of HP at the crank is 20 psi with the mods I have...approximately? and then with 23?

 

[Stanford]

Don't try to guess your horsepower, it's not worth it. You can take it to the track and with your trap speed you can get a good indicator of horsepower. Or just wait until you get to that dyno. If by chance you somehow don't know, a 16g is rated at 350ish crank horsepower(This is on a WELL tuned car with all supporting mods). I have seen quite a few 300+ whp dyno sheets.

 

[billdo_83]

Get DSMlink or PL to see what boost you can run at. Every car is different.

 

[zoran316]

I just dynoed at 284 whp at 20 psi, i guess its not too bad

the car got tuned too. except once in a while it hits some sort of weird fuel cut or ignition cut when going over 5k rpm in 3rd gear or 4k+ in 4th...but hopefully that will get fixed too.

 

[Groomz]

Originally posted by zoran316
I just dynoed at 284 whp at 20 psi, i guess its not too bad

the car got tuned too. except once in a while it hits some sort of weird fuel cut or ignition cut when going over 5k rpm in 3rd gear or 4k+ in 4th...but hopefully that will get fixed too.

You should be over 300whp at 20psi. Get those problems fixed and you should make more power. Whats your peak ignition timing at?

 

[miamieclipse]

What about on a big 16g (6bolt engine) wit 510cc injectors, and a JET chip. What can the boost be raised with a turbo back exhaust, intake w/ filter, downpipe, mbc, and boost gauge?

Also how much more can o push it before i need a fuel pump ( iwas thinkin walbro 195lph)

 

[miamieclipse]

PS sorry for thread jackin