so yeah, i searched and I couldn't find any relevant threads... so here goes:

I'm interested in buying a 5/16" Copper Iso Thermal plenum spacer and an Iso Thermal MREV 2.

I have and 05 AT with a z-tube with stock airbox & air filter.

I wasn't going to buy the MREV 2 before, but they have a sweet sale price + the rebate for my NON-REV UP VQ engine.

So, the questions are: Will this in any way affect smog tests and gas mileage?

Thanks in advance

 

I'm finding it hard to believe that no one has at least a small bit of input

 

If anything it will improve your gas mileage..and no it will not effect your emissions.

 

I doubt it will affect your emmisions... but it could possibly help your gas millage.

Man, your only 16 with a G35 and still wanna mod it?!?



.

 

if you are in Cali, it will fail. We have a visual inspection that gets done, anything that does not have a CARB # will cause a fail, even if you can pass the smog test itself. The trick is to hide these kind of things before you test.

I had to relocate my VAFC into my glove compartment in order to pass the SMOG on my old Integra Type-R. I didn't think they'd be that **** about it, but it depends on where you go. I've also passed with a NON CARB Intake Manifold on it too.

 

This doesn't sound right to me. So, what you are saying is if I had a classic car that doesn't have a CARB #, they will automatically fail me? Can someone confirm this?

 

i also have another concern, do we need to have the car tune after installing those parts or just need to reset the ECU. Sorry to hi jack the thread but i think you will want to know that also right xx7sephiroth7xx.

 

Even putting a CAI will affect what your emissions scores are. Typically with most engine upgrades you will be potentially hurting yourself when it comes to emissions.

 

An ecu rest is all u need, unless there is a chance you might be running lean b/c of too many other breathing mods. W/ only intake/ plenum and spacer, I have no need for a tune, but if I get exhaust and or/hfc, a tune might be necessary...

 

wow, thanks guys. I really appreciate your comments, although I did get mixed answers

skaterbasist: i just want to bring out that g35 exhaust tone. i'm in <3 w/ it.

so... this is what i get from this thread:

1.) if it looks stock (if they can't find the mods), and passes the test, it's fine.

2.) I don't need to re-tune the car unless I add exhaust or HFC (which I don't plan on doing until my warranty runs out)

is this correct?

also, do I really need to reset the ECU? wouldn't it learn to adjust over time anyway?

 

they probably wont even notice a 5/16 spacer..especially if you have the egine cover on..

reflash should be the last mod that people do imo

 

if that were true then why do you think so many people do it? just for fun? resetting the ecu will allow it to learn again..

the question is..which is the correct way to reset the ecu lol

theres like at least 3 methods i think

 

i was wondering when you were going to chime in, hero

thanks again, to all of you.

now i just have to search how to correctly reset the ECU. >.<

 

i would do the pedal method as technosquare says

jmo tho

 

yeah but pedal method is hard man, i need someone to help me do that. What is other ways?