CG_RX7

Hey!

I just picked up my first rx and was wondering what i should do first to keep it in good shape, it only has exhaust and a boost guage. Ive heard that a fuel cut defencer is a good idea for general safety, but heard that it can cause overboosting??? should i just go with a piggy back fuel computer if i plan on doin something like a turbo back with intake?

any help would be great!

thkns

idsigloo

If your experiencing fuel cut because your boosting over 7.6psi then you will need to get a FCD. This condition can be caused by aftermarket exhaust that flows more. When you get a FCD then you will need an aftermarket boost gauge because the stock gauge will no longer be reading correctly. With stock injectors I wouldn't recommend boosting over 10psi. I recommend replacing all fluids, this includes tranny and diff. A turbo back exhaust should be fine. The only problem about the intake as that our cars use an AFM so you'd have either find a direct replacement pipe or do some light fabbing and relocation of the afm.

CG_RX7

thanks for teh help...i love the rotary feel but it scares me shitless lol

Alex6969

that fear goes away once you rebuild a motor or two

riverzendz

Hell, it even goes away after you spend a little time with it. Learn yourself up and you won't be afraid anymore.

sholitz

iTrader: (1)

If you plan on getting an fcd, watch out for boost creep as your stock wastegate isn't good for alot after stock. Think about porting it.

idsigloo

You get a FCD because of boost creep on a stock ecu, not to create it.

sholitz

iTrader: (1)

Is my thinking incorrect?

Fuel-cut occurs when the ecu sees "to much" boost.
FCD stops the ecu from cutting fuel, which means more and more boost.
With intake and exhaust he will theoreticly see somthin like 12-14 psi.
Boosting like that on a stock wastegate means boostcreep like mad.
All that creepin means you're in trouble...

where as if you port or go external even, no creep.

Am I wrong?

rotorforce

First things first. Good tune-up. You can search the archives as to what you should replace during your tune-up. Second a nice turbo-back and intake with an rtek 1.7. Third you should start looking at fine-tuning other areas such as clutch, suspension, and braking. Unless you need to replace the motor and you want just good clean fun go with the above mentioned. But as I always disclaim on my suggestion, "that's what I would do"

Welcome to the rx7

LaRazaUnida

Welcome aboard. Working on these cars is pretty easy and alot of fun. Sounds like a plan that you got, however Im sure it will change 15 times after you read one or two threads...then change again after that

I wouldnt be for the Piggy back due to the fact that just an intake and exhaust will not cause harm as long as you have a FCD, boost gauge, and boost controller.

If you plan to do more down the road, ie bigger turbo, spending money on a piggy would be a waste because of the fact your ecu will be like crusty bacon. Best way to go would be a stand alone like a Haltec. Ez to manage with all of the online help and more than likely someone will have a similar set up and give pointers.

Ok, so back to basics. A few things that should be done before you go with the exhaust and cai. Fuel Pump re-wire. Must do! Its in the archives somewhere...
Another thing, fuel pump upgrade. Ez fuel pump upgrade to do, without having to worry about a fuel regulator, is putting a direct swap 3rd gen fuel pump in. Cheaper than a hundred bucks at any autozone or oriellys.
A biggie that can make a big difference as well... GROUNDING! While you do the grounding, it would be a good time to replace any vac leaked hoses and intake manifold gasket.

So yea, those are some small-medium projects that could result (in my case, DRASTIC) with great outcomes.

eriksseven

iTrader: (6)

What boost levels are you seeing?

How is everything running right now? Before you even think of modifiying the car beyond where it's at, make sure you know exactly what you're doing. It would be a bad idea to bolt on a turbo-back exhaust and a (good) intake without knowing everything else that must be done to support the new power-level.

To support a full intake and exhaust you'll need to first, port your turbo's wastegate.

Second is upgrade your fuel-pump to either an FD pump, or a Walbro 255lph. pump (the most common pump upgrades).

Third, you'll have to get an FCD, or a chip like the R-Tek that has an FCD incorporated into it. pocketlogger.com

Once you've done these important "safety" mods, then you can go ahead and get the intake and exhaust of your choice, but be sure to research everything very carefully before going nuts.

With this particular "safety net" in place, make sure you keep the boost below 10psi, which will likely depend on how well you port your wastegate (to prevent boost-creep).

Check out fc3spro.com and the FAQ for more important information.

Secondmessiah

you only need a fuel cut defenser if you are experiencing fuel cut (loss of power at high boost)

good reliability mods are: all fluids changed, and tune up and knock sensor (and downpipe)

do things like that before anythign else

CG_RX7

Thanks Guys!

Goin to port the wastegate on the weekend..and probably grab an fd pump

eriksseven

iTrader: (6)

Heh, I wouldn't really consider a down-pipe a reliablity mod.

'87 turbo II

iTrader: (1)

I consider reliability mods a full tuneup, a turbo timer, knock sensor, and a fuel pump cut switch (for flooding).

MaczPayne

iTrader: (5)

To prevent failure:

Play with the car everyday, it likes that... especially redline.

Remember! Rub it gently, it likes massages. Go, "yesss baby.... don't blow a seal.. yess..."


I'm drunk as hell.... Ignore this post.

eriksseven

iTrader: (6)

LOL, best post of the evening...