So I am looking at a couple of low mileage 2.7t's (haven't test driven the 2.7 yet) and I have a few questions.

1) What does a non-turbo 2.7 make (wanting to know the starting point)
2) What is the stock boost of the turbos?
3) When chipping the 2.7t, does it increase the boost? Change the timing or something?
4) How high can the boost go safely on them?
5) How do the bi-turbos works? Does 1 spool at low RPM and another at high RPMs (like on a 300ZX TT)? Do they spool simultaneously? What RPM do the turbos kick in at?
6) I have heard that with some of the chips require an octane of 93, here in Washington, I haven't seen any above 92. Would I be able to run them on that or would I need a different chip? Does the 2.7t have knock sensors on it making the 1 octane moot? If not, if I need the 93 octane but can only get 92, would that result in some serious knocks?


Thanks!

 

a non turbo 2.7 makes 1,000 H.P., no wait, there is no such thing as a non-turbo 2.7.......

 

1. Not much. If your looking to mod go with the 2.7.
2. Not sure exactly but its less than 10. Probably around 6-7.
3. All of the above. More boost. More fuel. Less timing.
4. Depends on how you drive. Slightly increasing boost with a pedal to the metal driver will result in a short turbo life. However a large increase in boost with a driver that barely uses the max boost levels can lead to normal turbo life.
5. Turbos spool together and feed into the same intake tract. You really start to feel the boost kick in at about 2700-3000 rpms.
6. Thats a question more for the tuners because each utilizes the knock sensor diffenetly. Altitude has alot to due with the octane rating of both fuel avaiable. Generally lower octane is available at higher altitude due to the lower atmospheric pressures. This is a moot point in turbo vehicles because the intake is pressureized above atmospheric pressure. Generally speaking premium unleaded fuel is needed reguardless of octane number.

 

I realize that, but surely someone has figured out what the engine non-turboed would result in.

 

A non turbo 2.7 is nearly identical to a 2.8. The only major difference is the compression ratio, which is determined by the turbo or non turbo config.