Ive hurd things From people about FI being a Hold back on HP, and ive hurd of Carb haveing Drawbacks as well.
I just wantid to See Who's Running what and How you Like it , as to Conversion FI to Carb and what not.

 

you're better off keeping the stock FI unless your modification mandate more flow and you don't have the means to use a stand alone.

 

Search it... I am pretty sure there are many debates on this.

 

Tests have proven it, all else being equal FI has more power. It'll also have better fuel economy, better drivability, and you'll actually be able to optomise it for every operating condition, whereas carbs are a compromise, you'll give up some in one area to gain in another.

 

2nd Black91n/a

The stock intake manifold will be the biggest problem for big HP numbers once you go with a stand alone. For a driveable engine on the street its pretty good though, just don't go crazy with ports. The runners are too long for high rpm tuning.

 

I think carbs are for cars made pre-1980 an have no place in any sort of performance application.

I think they are used by people that just don't get how simple Fuel Injection really is, from tuning, to reliability, to overall driveability.

 

Well I thank you All for Not letting me make a Stupid Mistake.
I liked the FI as well For Reasons stated Above.

 

I would say do your home work and see which one suits your application the best. Carbs are pretty simple, and, in my experience easier to diagnose but they don't adjust themselves the way FI systems do, so you suffer some on ease of routine maintenance. A good carb setup can be a whole lot easier to tune than a FI system, I run a Dell'orto and can re-tune my car for any track/weather/altitude in about 20 minutes ( I'm talking going from autoX in Tx to road race in the mountains of Co). Oh and I pull nearly 200 hp from a stock 13b 6 port with the Dell, a Pierce manifold, rb roadrace header and 2 1/8" exhaust w/ a Flowmaster on the end. Total cost $950+engine and chassis.

 

You should check out this thread as well it has a little more detailed info:
https://www.rx7club.com/showthread.p...fuel+injection

 

Carbs tend to be easy for old guys to tune because that's what they're used to and that's what they understand. It's usually easier for the young guys to understand and tune FI because we grew up in the computer and video game world. With a good system it shouldn't be very hard at all to tune, and you'll never have to re-tune it unless you make mechanical changes.

 

All things equal, FI is far superior to carbs. The reason people say FI holds back power is because whats really holding it back is the stock intake. When you go carb you no longer have that restriction.

 

Lol by old do you mean car or driver? I built my own computer but am still having difficulty visualising whirled peas when it comes to an FI conversion for my car. But then I may just be dense.

 

It's a reference to the tuner, and it's a generalisation, so it's not always true. The older guys who've been at it for decades grew up on carbs, when FI was a hinderance to power because it was stock or nothing, and you couldn't tune it at all, or at least not very well and/or not cheaply.

 

Very true. The reason you see a lot of power with carbs is because generally they're sidedraft carbs, bolted straight to the intake ports, with a foam filter on the end. Filter -> carb -> engine is MUCH less restrictive than the entire stock intake system.

Put independent throttle bodies on with FI, and you'll see the same effect, but be able to tune for greater power.

-=Russ=-