MazdaRx7Racer4Life

Since we always have these newbies coming on here and asking: "how much horsepower would I have with
_______, _________, and __________." Why doesn't someone that is really experienced in aking programs make a calculator for the fd estimated hp? Ive seen them before. It would be cool to just put in your car year and model (base, touring or r1) then adding the mods one to your car and it will calculate the hp/tq ratings for that specific setup, we could go around analyzing and surveyiong members on the power ratings of their setup until we compiled a database and were able to design this "FD Power Calculator" I think it would be fun to do. Anyone up for it? :d

Godzilla-T78

too many varibles...

XSTransAm

we already know what kind of power mods will make on the car... the variable that makes this calculation impossable is tuning. however it is fairly easy to say "about" how much power potential a setup will have since its such an established car.

also, the newbs wouldent use the calculater.. they would just post :P

jdhuegel1

Damn... If I'd only have paid attention in Visual Basic..

kyle@insight

Reasons I won't do it;

#1 answering the same reoccuring questions for noobs isn't worth my time to program it.

#2 Tuning is everything and can make the difference between 300whp and 350whp. Too broad of a paremeter.

#3 This is what a dyno is for. Put the car on a dyno and I promise you'll have a completely accurate result of the power you're making. Imagine that... and you won't even have to use a computer... which is definatly a good thing considering some of the people on here's computer skills

RxSeven1

iTrader: (2)

what kyle said. btw this is more of a lounge topic

MazdaRx7Racer4Life

sorry guys, just a suggestion to be able to link a newbie to the calculator. We could even put it as a sticky, but I guess your all right.

Flybye

I think it's a good idea. A desk top Dyno for RXs.

As far as the tuning is concerned, you could always just ask if they are using a reprogrammed stock ECU, a PFC with stock maps, etc. And tuning is mostly about getting the correct air/fuel ratio at every RPM band till redline, so.....just make the program run at a conservative 10:1 and ask the use if they want to run 10.5:1, and so fourth.

Like Desktop Dyno, it's all highly refined estimates. Your answer will be something like "You should have around xxx rwhp"

****, even I could even make up a cheap one using simple variables in C++ using the command console. So far, it looks like basic. If this occurs then that otherwise do this. If you select YES to having a MP, then add 30hp otherwise continue to next question

MazdaRx7Racer4Life

see, its not a totally BAD idea.

vchacon

They have something like that already... I saw a calculator on the spike network used in one of the automotive shows for a muscle car.

MazdaRx7Racer4Life

yeah, but we were thinking more along the lines of the fd, and with the mods known and common for fd's

diablone

iTrader: (2)

I can't wait til some dreamer loads it up and selects every mod, and goes around telling his friends what he'll be running. Or people whining because their figures don't match up to the program.

MazdaRx7Racer4Life

haha, were already finding probs and having complaints and it hasn't even been created yet. Ill try to start learning a likttle visual basic, but Im sure that there are some rotary+computer burnouts around here, up to you guys!

InsaneGideon

How about an .exe that calls IE and points it to the forum search page!

DeepInTheGame

I am capable of creating the program, you just need to PM me EVERY possible part that you can put on an FD. Not to mention the different makers and their different quality parts, boost level variations for each mod, and such. It'd be fun to create, just to see how well I could do it, it wouldn't even be that hard, just time consuming. Hell, I could even do it with Qbasic if I needed to, this isn't that hard of a concept. But like everyone said, TUNING is a huge variable. You can always give a mod a +/- value. But with some ppl's list of mods, by the end you're gonna have a figure that's like 375rwhp +/- 900RWHP.

kyle@insight

Like I said, tuning is everything, results would vary too much. If anything, it'll inspire more stupid posts... "WAH! I dyno'd and it doesnt mach the calculator" and blah blah. Not worth my time, if you can't get an idea yourself you need to spend more time reading.

Wargasm

I could write that in about 5 minutes in Perl... easy.

The problem is that nobody would LISTEN to it. They'd whine that so-and-so's car made 13 more RWHP than my program said and then complain that it was inaccurate.

I was at a dyno day last summer and on 3 cars that I made predictions on, all were less than 10 hp "off" my guess by ONLY hearing the mod list. (no riding in the car or prior dyno knowledge).... so it's not that hard.

Brian

obviousboy

I think there should just be a 24 hour wait on this board before you can post...The 16 yo will get pissed he cant post and have to use the search button..stupid post problem solved

Sprockett

http://www.sporttunerpro.com/

deified

Kyle if you keep trying to bash this idea, people are gonna ask why this guy (who dosn't even have a Rx-7) even on here. Give the guy some credit, it would keep alot of dumb questions (which you're bitching about) off this forum.

MazdaRx7Racer4Life

I think we can do that. Maybe we could have an option of "Not tuned at all" "Mildly Tuned" "Pro Tuned" I don't know, I just figured it'd be fun to find the parameters and useful for future reference.

29.95? Looks like they are making some profit? I was just thinking about doing it for use of the forum members, but I guess it looks pretty cool.

Cihuuy

Here is a thought... how about tell them to play Grand Tourismo or NSF underground... :p j/k

twinturboteddy

A FD puts out approximately 215rwhp and anywhere between that and 350rwhp modified while still on stock turbos on average.

Modifications will get you anywhere between those two numbers.

215-350. That's all folks.

I can't believe anyone would want to make an exact science as somethign as stupid as this. It ain't that hard to comprehend.

novadan67

I think the biggest problem with this would be interaction between mods. For example, adding a good low restricion intake to a stock car may add say 5hp. If you have a heavily modified car with a stock intake the same upgrade may make 15 - 20 hp due to the intake being the bottleneck. The same would hold true for almost any other mod.

That being said, I still think it'd be interesting to see how close someone's program could come to actually predicting hp numbers. There is plenty of dyno data on this board to prove that the calculator is accurate / inaccurate. I would guess if you spent enough time considering all the variables and interactions you could probably come fairly close. I have used the desktop dyno programs for my big block chevy and it came out pretty close. A rotary may be slightly more difficult, but I am sure that it *can* be done.

Flybye

Which is why, as I stated above, it is important to put a disclaimer. When the HP is displayed, put something like "You should have AROUND or NEAR xx RWHP" and have another disclaimer indicating that these are ESTIMATES and that actuall HP numbers have too many variables (tuning, air temperature, fuel quality, etc) to give an exact figure.

Might as well start the program with the opening screen saying at font 100 "WARNING, THIS ARE ROUGH ESTIMATES!!!"