I am considering just doing basic bolt ons, i have an 06 350z. What i was thinking of doing was crawford v5 plennum, exhaust, intake for now. with just basic mods like this how rich or lean will i be running? would it be a good idea to immediately get some type of piggyback system to tune the motor or would i be safe running basic bolts on like this on the stock ecu? thanks

 

If you are worried about it I suggest getting the TurboXS UTEC. I have some basic mods and the UTEC is my next buy this month. Refer to sig for more info.

 

i was running very lean with my bolt ons; like 16.5:1 before my ECU reflash

 

Haven't the faintest. Do the mods first. If you are concerned do a dyno test.

 

what model year?

 

testpipes and headers may lean you out, so get that last.

 

its an 06

 

What ratio is considered lean?

 

Get it dyno tested, $60-75 at most. $40-50ish on a "dyno day"

You shouldn't be able to hurt the engine (N/A) too badly if it runs lean...if the ECU detects knock it pulls timing. Your power will suck *** though, hence the reason for getting engine management such as UTEC (or others, do a search).