JerseyShoreFC

I wanted to go with a mild street porting on my 1986 when I get my rebuilt motor. One of the guys I work with was into drag racing when he was younger and he said that a friend of his owned an RX7 and had problems with the fuel injection after porting; I was told to go with a carb setup. Which is better for a street driven vehicle? If I stay with the fuel inj., what do I need to change besides the pump and injectors? Which would be the cheapest/easiest route?

JWteknix

iTrader: (2)

fi ftw just need what u said no more and tuning fi is soooo much easier u might wana look in to a standalone also

papiogxl

iTrader: (6)

Is your car NA? If it is, the fuel system will be fine for most port-jobs. A standalone is the only way to get the most out of your engine at both cruise and WOT. A carb will do one or the other.
A megasquirt standalone is currently the best deal for our cars. I got mine and a WBO2 sensor to tune it for $400, and the new wiring harness I made for about $75.

anewconvert

iTrader: (1)

If you are just doing astreetport then even with a turbo the stock FI should be ok.


If you go with a bridgeport at any level you will almost certainly need a standalone.


BC

Mx6-Rx7 Addict

Fuel injectors on the Non turbo FC's are sufficient for a good bit of power. If you ever do get nervous if you are going to make over 200WHP and you want to feel safer, upgrade the secondaries to 550CC from the TII, but you will have to have something to tune them down with.

I vote Fuel injection based on the reliability and precise method(s) of tuning. The stock 460's probably will be more than enough on a large street port. Driveability will be much better IMO.

Just invest in a megasquirt if you are up to it. There's a lot of open source and more and more cars running it these days. It's cheap and effective. Check out the EMS megasquirt forum and i'm sure you will find some good information.

If you have the extra cash, you could alway go with a much more expensive model such as the microtech, haltech, wolf3d, etc, but i think the squirt would be just fine.

K-Tune

iTrader: (26)

carb if you are going with something BIG and don't have the money to invest in standalone and tuning tools.

otherwise, just stick with FI.

snowball

carb is a great way to go if your trying to make alot of power but half *** the job.

inflatablepets

Fuel injection is far superior to carbing an engine. It may be a bit more frusterating in the beginning, but it is all worth it.

FC Zach

Damn, that really hurts. Mine is carbed and half-assed is definitly not an adjective, but fast is a good word. Im reving to 10,000 RPM winding out each gear and screamin past people shootin 3 foot flames from each pipe, I just wish I could see the look on their faces.

papiogxl

iTrader: (6)

See, if it were FI, it wouldn't run so rich that it shoots huge flames out, only on shifting would it that. J/K

john ward

iTrader: (7)

i ran carb for 3 years and finally sobered up and did a t2 swap

snowball

wait its pig rich and burns up plugs like crazy... but not half assed... our definitions must difffer.

MrFC3S

ok, sorry to bring up the post, but what if your Bridging? Squirt with the stock intake or would carb be more effective? and how much does Squirt usualy cost to set up with RX7s, Writeup anyone?

Black91n/a

All else being equat FI is far superior. It gives you accurate control over the AFR at all points of the operation of the engine. With a carb you're going to be compromising one point to gain in another. This will enable you to have a greater area under the curve, meaning more acceleration. It'll also have much better drivability.

Aaron Cake

iTrader: (1)

With a bridgeport, you need a simpler manifold. So consider either the TII manifold or something custom (aftermarket or otherwise). The stock NA intake is tuned for stock ports...

As for the Megasquirt, it's always interesting that it's people's first choice to recommend. As if no other standalones exist...

The Megasquirt is a fine choice, if you have the knowledge and experience to make it work. Is it rocket science? No. But unless you are talking about the plug and play Zeal kits then the 'Squirt requires you to be able to modify the actual circuit to run the CAS and FC ignition, load the appropriate firmware, and then set it up from scratch. The Megasquirt FAQ in the Megasquirt subforum has all this information but if you don't have at least some electronics skills then it's going to be a difficult task...and I'm totally ignoring the fact that unless you buy a 'Squirt preassembled (for a premium) then you need to assemble the actual Megasquirt.

The advantage the 'Squirt has over other systems are the features it offers for the price, and the fact that if you are capable you can customize it to do anything you want. The disadvantage is that you must know how to do this.

Errol101

I NEED help my car wont start no kick, could it be my fuel injection or is it more likely to be my fuel pump. Man my rocket isn't up to par and iam getting super pissed help me plz and if its any of those two where is a cheap place to get them in canada.


smokey_hornet@hotmail.com