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Discussion Starter · #1 ·
I'm curious what you all think about whether I'm having delusions of grandeur or not.

If money were no object--even though it is--and I wanted to build a car that was faster than a 2008 Mustang, which comes in at 300hp with a weight at 3356lbs., I figure I would need to boost my 2007 Civic Si fa5, which comes in at stock with 2945lbs. to approximately 360hp.

A rough estimate is that either a supercharger or turbo is only going to get me approximately 40hp, other bolt-ons may add another 40 or so, and nitrous maybe another 40. So total we have maybe another 120hp on top of the advertised bhp of 197, which I know is probably more like 175 at the wheels. In any case even with a total engine rebuild, so that I can get the most out of my SC/turbo/nitrous, I am still coming up way short of my 360 goal.

One condition is that I'm not willing to strip out the interior of my car, since it is my DD.

Thanks, I'm interested to hear what you all think.

--Chris
 

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I've hard this soo many times its unbelievable. Okay first of all i will tell you it IS possible but you have to put SO much money into it its not worth it. First off let me tell you that under normal coditions turbos generally net you 25hp for every pound of boost you use. I think the same goes for nitrous except its 50 more hp per cylinder. Just my .02cents
 

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Discussion Starter · #4 ·
O.K. I knew this was probably a not-uncommon fancy to many, so that's why I posted it. I'd love to see some examples of car's that have achieved this benchmark--and will do so with some more research. What I find I'll link to.

I didn't want money to be the main theme of the thread--I like hearing about the ins and outs of tuning; however, by my own rough and early build sheet, I can see that even before going turbo/SC/nitrous, this would cost me nearly 7k in bolt-ons, then >4k for the forced induction, making the price of my Si >30k (not to mention maintenance and labor).

It seems to me that an enthusiast would rather get dirty with modding the car and learning what's possible than with buying the cheap way out, which only teaches you how to make a smart purchase (albeit a more rational one--I know), not about automotive science. If I'm wrong, please correct me.
 

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2007 Civic Si fa5, which comes in at stock with 2945lbs

i have a 07 fg2 and i know the dif in weight is like 60 lbs for the 4 dr.

i weighed my car with me in it w/ no spare and 17 lb wheels and it was 2,830 lbs.

just lettin ya know :) 1/4 tank too
 

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O.K. I knew this was probably a not-uncommon fancy to many, so that's why I posted it. I'd love to see some examples of car's that have achieved this benchmark--and will do so with some more research. What I find I'll link to.

I didn't want money to be the main theme of the thread--I like hearing about the ins and outs of tuning; however, by my own rough and early build sheet, I can see that even before going turbo/SC/nitrous, this would cost me nearly 7k in bolt-ons, then >4k for the forced induction, making the price of my Si >30k (not to mention maintenance and labor).

It seems to me that an enthusiast would rather get dirty with modding the car and learning what's possible than with buying the cheap way out, which only teaches you how to make a smart purchase (albeit a more rational one--I know), not about automotive science. If I'm wrong, please correct me.

Modding a car barely ever qualifies as a smart purchase. I'll give you rational when it comes to modding but smart, never.
 

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Just buy a 99-2002 Camaro or Trans Am (320 HP stock) which will beat the Mustang without mods. If you want to do some mods such as headers, cam, ETC. you can have a lot faster car for a lot less than $30,000. Otherwise have fun spending your money and trashing your car.
 

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boy, were those the days!

driving my 5.0 around getting 12MPG, fun times :)

yea um, you purchased the wrong car. its a fun sorta fast car, its not fast. enjoy the MPG, and have fun with it. Dont spend 20k$ to make it "as fast" as something else stock.

here we go again. WHERE ON EARTH ARE YOU GONNA FIT A SC in that engine bay? i doubt it.
 

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I can see where youre coming from, if everyone on this website had as much money as bill gates im sure they will have their Si fast as f*ck. But the problem is, im not getting the impression youre really well off or anything, so...I dont think I would ever push my Si to 320+ hp, since it being a DD, there are so many things that could go wrong. Engine could blow, in any sort of manor, maybe throw a rod, etc. Youd have to do a lot and spend a lot of money to smoke a mustang, and when you got to that point, the Si wouldnt be a DD, it would probly be wasting as much gas as a mustang would anyway. Get a sh*t car, like an old kia sobia :laughing:. Make that your DD, and make the Si your project car if you want. Then let us know how that goes :thumb:
 

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with the basic bolt ons cold air, sct flasher, slicks Ive seen 05 gt's run 12.9's my dads 05 mustang with a vortech runs 11.70s with a drag radial really I havnt seen a boosted si other then ajp's car go faster then 13.5 so it depends on how much loot you want to drop. Stock gts run high 13's average driver will run mid 13's on bolt ons. Just pull a me and spray the biatch lol
 

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I'm curious what you all think about whether I'm having delusions of grandeur or not.

If money were no object--even though it is--and I wanted to build a car that was faster than a 2008 Mustang, which comes in at 300hp with a weight at 3356lbs., I figure I would need to boost my 2007 Civic Si fa5, which comes in at stock with 2945lbs. to approximately 360hp.

A rough estimate is that either a supercharger or turbo is only going to get me approximately 40hp, other bolt-ons may add another 40 or so, and nitrous maybe another 40. So total we have maybe another 120hp on top of the advertised bhp of 197, which I know is probably more like 175 at the wheels. In any case even with a total engine rebuild, so that I can get the most out of my SC/turbo/nitrous, I am still coming up way short of my 360 goal.

One condition is that I'm not willing to strip out the interior of my car, since it is my DD.

Thanks, I'm interested to hear what you all think.

--Chris
why is 360 your goal?
you fail at your math.
dont want to turn this into a flame war, but lets first redo your math.

base WHP.
civic = 180
mustang = 260 (alot of powertrain loss transfering to the rear wheels)

weight
civic = 2945
mustang = 3356

power to weight ratio
civic = 16.36 lb/hp
mustang = 12.9 lb/hp

comptech supercharged SI w/ I/H/E is about 250whp.
power to weight ratio is now 11.78. thats a good amount faster than a mustang with alot less than 360whp.

so where do you get your 360whp from? is that just what you want? or you think thats what you needed to beat a mustang?
 

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Get a stage 2 turbo from AJP and you should be putting about 340 WHP. Someone from the Mid Atlantic area has this setup and he's damn fast.
 

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Discussion Starter · #19 ·
The mustang is just a benchmark; something to shoot for. I’m glad NIGHTHAWKSI redid my math, since 250 is easier to shoot for than 360. Math was never my strongest subject--I actually cribbed the numbers from an old table that was rough and ready. Despite all the attitude I'm getting over the comparison, it looks like the idea had a lot of sex appeal, since I had so many views in such a short time.

Things are just in the R & D stages now, so thanks for correcting the math. But even to get to 250, I'm looking at Turboing the car or getting it Supercharged, which means that there's at least 8k in mods. Although looking at Colton's eXe setup, he's reporting 210hp just from I/H/TBS. I did notice that a NA engine on the SI with bolt-ons only pushed itself up to say around 200 or so whp per the "200+whp Club" thread.

An older stock muscle car still would cost me at least 10k. The 2000 Camaro, e.g., is 9.5k used; start adding bolt-ons and again I've dropped, say 15k, on this thing. Besides, I don't have room for another car; I'm a city dweller, parking already sucks around here. I could however spend said money on souping the Honda into a monster. I agree that spending 15k on the Honda is irrational; unless I get back >500hp or so. I know that such affordable tuning options probably don’t exist, so at most I can see around here is 350whp at the max.

Thanks though for all your comments and opinions; I'll take em for what their worth. I know I have a boatload more R & D to do here; even some philosophizing on the rationality of it all, but that's what all this chatter online is for.

A good question is what mods will negate the use of the car as a DD; which ones are not CARB approved; etc...

Anybody know any good threads on this, esp. when I live in NY? Where do you find this info online, or do I need to contact the DMV or go to a law library?
 

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boy, were those the days!

driving my 5.0 around getting 12MPG, fun times :)

yea um, you purchased the wrong car. its a fun sorta fast car, its not fast. enjoy the MPG, and have fun with it. Dont spend 20k$ to make it "as fast" as something else stock.

here we go again. WHERE ON EARTH ARE YOU GONNA FIT A SC in that engine bay? i doubt it.
kraftwerksusa.com...... This will be the 3rd sc option for our si's... I honestly think it will be the best supercharger kit out there once its done! And it will come with some type of reflash, or tuned piggyback..
 
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