Just curious, I'm looking to pick up the helix cat-back, then a testpipe, then injen intake, i was hoping to only reflash once all have been purchased/installed.

back on topic:

Will it hurt to run the cat-back without a reflash? (keeping stock cat on for now)

 

no.

Are these your first mods by the way? If so, i'd rethink your intake mod?

 

yes they will be the first mods. what would you recommend sir?

 

Nope. I feel the only time you get your ecu flashed is when you start changing things on the motor like cams and cam gears and injectors and so on. But if minor bolt-ons a flash will get the most out of your parts....not much though.

 

Your post leads me to believe you won't be getting a full turbo back exhaust. Are you saying that you're working from the cat rather than the down pipe? You'll FOR SURE want to get at least a 3" TBE before you ever think about getting a new intake.

 

TBE
MBC@21psi w/boost gauge
JDM MR DV
K&N or Works panel filter
Custom flash
Walbro fuel pump (optional)

Then cams followed by alky if you want to go that far.

If you get the Injen or any other aftermarket intake like that, you will then need to get a tune, but not with just an exhaust.

In the future, please search first. Not only is this the most basic of questions, but it was already asked (and answered) by our resident numbnut a few threads below yours...

 

cool thanks. Yes, eventually I will be converting to full turbo back. But i just now got a little bit of change floating around burning a hole in my pocket. Thanks for the input, i'll be sure to avoid the intake until I have the turbo-back complete.

and sorry for the non-search :P

 

Hey, walked, you might want to take a step back if you're new here and are a 350z enthusiast. You seem to be a bit confused on a few things.

First of all, he SHOULD be working from the cat first rather than the downpipe. It goes in this order: cat-back, cat delete or HFC, then downpipe.

Secondly, you don't have to do all or any of them before having some sort of intake. They aren't related at all...

 

This is not good advice, because there is much power to be gained from a flash REGARDLESS of mods. The only problem is if you get the type of flash where you have to keep paying to get reflashed after additional mods. I do my own tuning with the S-AFC, so that is no issue, but I immediately gained significant power when I had no mods just from getting rid of the factory richness, and the same goes for any Evo, whether it has major mods, mild mods, or no mods. You will gain just as much from a flash at any stage...

 

I actually did RMR intake as my first mod. Had it on for 2 years without a tune. No problems. I know it probably is insignificant in terms of power, but I wanted to hear the turbo and BOV. Not to mention it was easy enough to install, I could do it. Nothing else is done to my car...for now.

 

I was just curious why you have the Walbro as optional?

 

Because it is not necessary at this power level. Some argue that it's not even necessary on the stock turbo EVER, but I installed one on my car just because I use race gas at the track and crank the boost to 24psi. If I never went above 21psi, then I wouldn't have installed one. Al always recommends people get one before getting flashed, but that's more for safety than out of necessity.

As for your RMR intake, you said the exact same thing that everyone else said, "I've had it installed for 2 years with no problems!!" Well, what sort of "problems" did you think we were talking about? It's not like you install the intake and the car goes to hell. It just screws up your MAF while causing a change in AFRs that is not properly accounted for in the tuning. You "think" everything is ok, but you don't really know unless you dyno it or run it at the track. This is when people usually realize how foolish it was to buy/install a mod just to hear the BOV and turbo, which is just ludicrous...we don't drive Honda's.