Suprising acceleration?

[MoJoeTCM]

i agree with the bad diaphragm....i had the same issue twice due to the cheap spring mod....Good thing the stealership gave me two new turbos cause of it....lol

 

[morkys]

Get a boost gauge asap. When in doubt, run the highest octane gas you can. Cooler denser air definitely makes a difference. I used to feel the same thing with my 89 PGT. Never mind fall weather, try -15 or -20 C. The ECU tries to compensate, but you get much more boost regardless. Trouble is, you also go through gas like $hit through a tin horn as my dad would say...

 

[fever]

Has anyone installed a boost gauge? If so, any recomendations of manufacturers??

Thnx

 

[morkys]

btw...a boost gauge won't tell the whole story. Remember your chemistry, or physics... PV=nRT. 6 PSI at 5 C is not the same amount of air as 6 PSI at 30 C, for instance. Regardless of the pressure, colder = more air, and..all other things being equal, colder can sometimes provide protection against detonation. Even under vacuum (eg a normally aspirated car) a FI car has more power in colder weather. Colder = more O2 = more fuel burnt = more power. Maybe the difference isn't huge for an NA car, but I wouldn't be surprised if its a measureable HP difference for a turbo car, again depending on the temp difference. I think there is a limit to how much more power you can get in cold weather. Sometimes it is cold, but its a high pressure weather system. Anyhow...cold does help power.

 

[msp2003.5]

Has anyone installed a boost gauge? If so, any recomendations of manufacturers??

Thnx

autometer or stewart warner

and the vacum line coming off of ur BPV to ur manifold is the line u tap in to for the boost gauge

 

[.mazda.speed.]

btw...a boost gauge won't tell the whole story. Remember your chemistry, or physics... PV=nRT. 6 PSI at 5 C is not the same amount of air as 6 PSI at 30 C, for instance. Regardless of the pressure, colder = more air, and..all other things being equal, colder can sometimes provide protection against detonation. Even under vacuum (eg a normally aspirated car) a FI car has more power in colder weather. Colder = more O2 = more fuel burnt = more power. Maybe the difference isn't huge for an NA car, but I wouldn't be surprised if its a measureable HP difference for a turbo car, again depending on the temp difference. I think there is a limit to how much more power you can get in cold weather. Sometimes it is cold, but its a high pressure weather system. Anyhow...cold does help power.

smart guy i wished i stayed in school. partying seemed more important, it still does.

 

[fever]

thanks msp2003.5

thanks for the recomendations and the info!