simplysix

iTrader: (1)

So I must be a little slow as I appear to missing something and know little about tuning.

I know you cant change injector size with out a tune, but how do you get the tune? Have the car towed to the dyno shop immediately after the swap? Swap injectors in the parking lot?

What am I missing here?

Ws6power1

iTrader: (1)

*** long as the new injectors are big enough for what ever mods u did u can drive it. It might idle rough and run rich but it wont heart any thing. If all u did was swap injectors and small mods a mail order tune would get by.

simplysix

iTrader: (1)

Im looking at doing a cam swap to "moderate-slightly aggressive" street cam. Other than that I have bolt ons (filter,lid, headers,ofy pipe, catback) I would probably swap to 42lbs injectors at the same time as the cam swap

gMAG

iTrader: (1)

Some tuners offer a mailorder tune with a discount later for the dyno tune.
This way, you can drive safely to the dyno location.

deatschwerks

iTrader: (2)

Depending on how big of an injector you choose, you may or may not be able to drive it.

The computer will inject fuel at the same pulse widths as the smaller (original) injector. It will be able to compensate a little when running off the O2 sensor...but under open loop operation, start-up and mid-high throttle input, it will run very rich...maybe to the point of not being able to run or drive.

Keep that in mind if you are planning on installing and driving to tune. Also, depending on your application...a parking lot install may or may not be feasible.

ZL1Killa

iTrader: (17)

i do not recommend driving with non-tuned injectors. this is not a hard swap, so I would think most of the time you just swap them at the shop. it doesn't require many tools to do the swap and its not difficult at all.