Alejandro

I was thinking about RB CB, M2 DP, and an air intake either M2 or Apexi. What can I do without upgrading the ECU maybe: CB and DP and wait to upgrade the ECU before the intake?



Thank you in advance,



Alex Kuipers

rxrotary2_7

should try searching. the usual rule is 3 mods before ecu. i would do cb and intake. do the dp after ecu. also may want to look into a fuel pump, and changing your fuel filter.

but seriously...search. this question has been asked and answered 8 billion times.

Mahjik

iTrader: (1)

If you control your boost to stock levels (around 10 PSI), you can run just about anything on the stock twin turbos.

Take a look at Wade's site for more info:

http://www.newwave.net/~flanham/wlan.../3modrule.html

So, as you see, it all depends on the amount of boost you are running. At stock levels, you will be fine. Keeping the boost at stock levels is another thing.

rynberg

I would do the downpipe first as this is also considered a reliability mod. Like Majik said, Wade's tests have proved you can run all the bolt-ons at 10 psi and still have a safe A/F ratio.

johnchabin

iTrader: (2)

Keep in mind you can have more air flowing at the same pressure as you open up the intake & exhaust. You can run lean at 10 psi.

maxpesce

check my Mod list (in sig) I run on the STOCK ecu w/o any add on controls and am still running on the rich side at wot - The stock boost controls keep me under 11psi most of the time. However on cold days (air temps < 45f) it will can hit boost cut at WOT and about 5500-6000rpm. Good thing here in SoCal the average daytime temp is 70+ an nighttime in the low to mid 60s.

Alejandro

I have checked Wade internet site thank you for the information.

So running the CB and intake will be OK without problems of running lean or any other problems?

Much better than CB and DP?

MilesBFree

iTrader: (2)

The downpipe is mandatory as the first mod, since it will help alleviate the heat problem.

Then maybe an intake. With those two, I hit 13 lbs. I bought the M2 stage 3 ECU.

One more mod, like a catback, and I wouldn't be comfortable with that ECU. Even the shops that sell the "unlimited" tuned stock ECUs will back off of the 3 mod rule of thumb. i.e.- they won't guarantee the ECU can handle 3 mods. Especially when you get a really unrestrictive intake like the M2.

I would do it one at a time, and see the affect each one has on the boost. Use the pills or Home Depot valves as discussed above.

If you have an aftermarket IC, you will have to factor that in as well. Less pressure drop on the big honkin' ones means you will get more boost.

johnchabin

iTrader: (2)

I agree with the downpipe mod first. I could actually feel the heat reduction through the floor when I put on the bonez downpipe/high flow cat.

This was an excellent mod for me. I am no longer cooking my under the hood electronics nearly as much.

Besides, when the precat clogs & disintegrates (and it will), you can damage your turbos and will damage your cat.

trigeek37

I am currently running dp, intake, smic, cat-back with the stock ecu. I am not going over .8 bar which shouldn't be a problem. that said, my PFC will be here on thursday

Alejandro

I have purchased a racing beat CB because the stock one was broken.
Can I do other modifications like DP and air intake or should I wait for the ECU upgrade to these mods?

Thank you in advance


Alex Kuipers

jspecracer7

Install the CB and get the downpipe, then go buy yourself an ecu.

Mahjik

iTrader: (1)

As jspecracer7 said, install the catback and get a downpipe. Don't worry about the intake right now. If you don't have the metal Efini Y-Pipe on the car, that will be a better mod to do before the intake.

Besides, you can always modify the stock air box:

http://www.rx7turboturbo.com/robrobinette/coldair.htm

jspecracer7

Agreed. And since the FD always seems to have cooling issues, I'm sure you're aware that upgrading the radiator and getting a metal AST should also be high on the FD modification priority list.

Alejandro

Running the CB and DP will not give any problems?

Later I will get efini y pipe and realibility issues like: AST, radiator,etc.

There is so much information on this subject and different opinions that I was a little confused so thank you for your advise and patience.


Alex Kuipers