How much boost should a stock obs 7.3 with a 3 inch down pipe have ...
and how much with a ts 6 position

 

somewhere in the 97 shop manual it says that if the truck (bone stock) makes 15 psi of boost in 3/4 gear at WOT up a hill or under load, the engine is operating at its 'rated power output' or something like that.

I think that's a conservative number, though, as I believe guys hit 20 psi with just a DP and 6637 and no other mods pretty regularly. I hit 15 regularly with known up-pipe leaks and just a 3" DP and 6637 DIY intake.

I have no idea on chipped boost levels.

 

Ok thanks for the info

 

With intake and 4" exh/dp i could get 20..but only if it was right. with my chip i could get 24. No up pipe leaks!

 

With my chip and mods unloaded I can get about 28psi. Loaded I can get over 30psi. But then one of my fittings for my boost gauge starts to leak.

 

She's a Cali truck, right?

 

What do u have done to your truck

 

What do u have done to your truck

 

Yes it's a Cali truck with 4:10's. 140v IDM intercooler bellowed uppipes, 3" DP, DP tuner f-6 chip, t-500 hpop, 1.0 quick spool turbo exhaust housing, 6637 intake, electric fuel. No boost leaks.

 

That sounds like a nice set-up for not much money!

 

Stock inj. 49 state truck. Down pipe. Chip. Intake. Ex. I hit 28-30 maxed out. 22-25 regularly.

 

modded i hit 48 to 52 psi maxed and 28 to 35 regularly

 

How have you been? I haven't seen you on here in a while?