i got a internal stock ls, with gsr tranny, intake manifold, 4-2-1 header, 2.25 exhaust and fuel regulator. my question is whats the diference between running a chipped ecu from using a apexi vafc, which is best or can u use both? also i got a msd 6al if i put a rev limiter on the msd, higher than the one from the stock ecu, will it rev up to the msd?
thankss

well with a chip everything is like a "base map"...if u use a vafc or something like that then you can actually tune it, grant it that a vafc is not the best thing to tune but IMO its better than a chip...only thing is that you have to ususally pay someone to tune it...prolly run u a good 1-2 hours on a dyno

U can actually tune the apexi vafc yourself long as u have a basic understanding of wat ur doing. I would highly recommend going to hondata s300 tho. The safc, vafc, and the new neo they are limited as to wat they can do. And to answer your other question yes it will rev up to the msd setting once installed. Another diff in chips and fuel programmers like the apexi line is that chips usually tend to advance timing which in boosted or nitrous apps is def not good. Fuel programmers do not do this making them a better choice imo.

I agree with with going with Hondata. I run a S100 and love it.

i have an s300 and it is awesome

SAFC will work but are not that great. They can only tune to a point and only control fuel not timing as well. A tuned chip/Hondata will set timing where ever the tuners sets it a SAFC uses stock timing unless you manually change it. The only complaint I have with the S100 is there is a hole in the cold idle tune for a B18B1. I have addressed this with my tuner and he knew all about it. It is not a problem with the S300.

since u still have stock internals tunning you car wont make much difference i dont think you will notice any difference if you had cams and uped the compresion then i would go get a tune you should put the money for a tune on some pistons and cams first then get it tuned but that is just my 2 cents i have a chipped ecu and am tuned with crome pro and i like it just fine never had a problem with it i also have a ls/vtec engine it is also chipped and tuned with crome but im thinking of switching to hondata s3000 it has more options than crome pro

Very untrue. The SAFC fiddles with the MAP Sensor signal which affects both Fuel AND Timing on Honda's, which is why they are garbage. You can't tune fuel independently from timing, so its very easy to run into ignition issues with them, however on a small setup such as the OP's car, its not the end of the world.

The S300 is great, but there are viable alternatives, namely eCtune and Neptune, of which I would recommend Neptune since there are just so many option, less bugs, and you can have a lot fun with your car. Either way, you will need to have the S300, eCtune, or Neptune programmed on a dyno, and you don't have to buy Neptune or eCtune to use them, just pay for the license and have a custom chip (read: dyno tuned for YOUR motor) installed and call it a day. It's a good way to save several hundred dollars if you don't plan on tuning the car yourself.

Oh yes it will. Stock B18B1 motor with IHE. Tuning gained 15hp and 11lbft and found more tq in the rid range than the stock tune.

i meant great gains like 145HP to 170HP dont get it wrong 15HP is a nice little bit but not a huge gain and i see the b18b with IHE but where is the graph with it stock you know a base run

Stock base map is the red and green lines, the 2 by themselves bottom 2 lines. Baseline was taken with IHE already on the car. 15whp from a tune on a stock motor is good..

Very untrue. The SAFC fiddles with the MAP Sensor signal which affects both Fuel AND Timing on Honda's, which is why they are garbage. You can't tune fuel independently from timing, so its very easy to run into ignition issues with them, however on a small setup such as the OP's car, its not the end of the world.
Sorry you are wrong SAFC can only control fuel and to a limited extent, 200rpm increments. It does this by tricking the ECU by changing the signal from the MAP sensor that you are right about, But id you need to change timing for boost or spray then with a SAFC you are SOL.
The S300 is great, but there are viable alternatives, namely eCtune and Neptune, of which I would recommend Neptune since there are just so many option, less bugs, and you can have a lot fun with your car. Either way, you will need to have the S300, eCtune, or Neptune programmed on a dyno, and you don't have to buy Neptune or eCtune to use them, just pay for the license and have a custom chip (read: dyno tuned for YOUR motor) installed and call it a day. It's a good way to save several hundred dollars if you don't plan on tuning the car yourself.[/quote]
I also have to disagree with you on Neptune. Hondata is the best tunable setup for a Honda. The others work but can not tune as fine as a Hondata. They also dont run the motor as well as a Hondata. I have personal experience with Chrome on a boosted D16 and when switched to a S200 it made more power at the same boost, got better mpg and had a better AF ratio. Just my 2 cents. Dont get me wrong Neptune, Chrome all work well and just the amount of control Hondata gives is better. JMO