are these boost/vac levels normal ?

[mino]

just checking to see if these are normal levels for a GT auto with , stock airbox K&N drop in with all 3 silencers removed , synthetic oil and premium gas -car has 20,000miles . PARK - IDLE VACUUM 19/20 - cruising vacuum - 24 lbs : WITH AUTOSTICK MODE - 1ST ( I dont like to boost here much- only stay in 1st till about 2700 rpm ) 2nd - will hold 15/16 lbs boost @ 3500 to 4700 rpm - 3rd will drop to about 10 lbs between shift then rise to 15/16 lbs @ 4700 rpm - 4th ( i dont like to pust boost past 10lbs in 4th , i heard its a weak link ) - these levels were measured with the SUNPRO gauge

[Mean Green]

Vac reading is normal. I do know that around 70* your boost spike should be around 13 dropping to around 11 at redline. Boost will go up with hotter weather and go down with colder weather. Sounds like it is around 80* where you are or the Sunpro gauge may be off. Stage 1 boost spikes around 15 and drops to around 13 at redline. I've found the Aeroforce Interceptor scan gauge is right on the money with it's info. Rather than just getting a boost gauge by itself I would get the Aeroforce gauge and have boost/vac readings plus a bunch of other info.

[mino]

i will pick up a pressure tester and let you know after i test - ( maybe the car was S-1 upgraded - i did buy it used )

[Mean Green]

Originally Posted by mino

i will pick up a pressure tester and let you know after i test - ( maybe the car was S-1 upgraded - i did buy it used )

If it is very easy to light up the tires and there is a sticker on the pcm that says "For Off Road Use Only" then it is S1. There is also a code that comes up when you do the key dance, but I don't remember what the code is.