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C5 Power Modification Guide

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Old May 13, 2004 | 03:13 PM
  #1  
pdykinga's Avatar
pdykinga
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Joined: May 2004
Posts: 414
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From: Tucson Az
St. Jude Donor '04 & '05
Default C5 Power Modification Guide

I was hoping some people with more expertise than me would help finish/edit this list and we could post it on the site for the new owners, like me :)

Modification path for C5
Product Cost Hp increase Street Legal

1)Intake $200-400 15-20 hp Y
2)cold air screens $100 3-5 hp Y
3)hood seal $12 ½ hp Y
4)Exhaust $500-1500 5 hp Most
5)Powerduct $200-300 hp?? Y
6)Throttle bypass $12 1hp Y
7)Thermostat $55 3 hp Y
8)X pipe $300 7-10 hp Y
9)High flow or no cats 500-700 hp?? Maybe
10)MAF sensor $325 15 hp Y
11)Intake manifold $700 15-20 hp Y
12)Throttle body $400 15 hp Y
13)Ecu reprogram $400 30hp Maybe
14)Headers $800-1500 30-40hp Not most
15)Cam $400 hp?? ??
16)Heads $1500-3000 hp ?? ??
17)Supercharger $5000-7000 150+hp??
18)Turbo
19)NOS
20)Methanol?
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Old May 13, 2004 | 03:40 PM
  #2  
blackbelt's Avatar
blackbelt
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Joined: Apr 2001
Posts: 1,936
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From: Menifee California
Default Re: C5 Power Modification Guide (pdykinga)

I was hoping some people with more expertise than me would help finish/edit this list and we could post it on the site for the new owners, like me :)

Modification path for C5
Product Cost Hp increase Street Legal

1)Intake $200-400 15-20 hp Y
2)cold air screens $100 3-5 hp Y
3)hood seal $12 ½ hp Y
4)Exhaust $500-1500 5 hp Most
5)Powerduct $200-300 hp?? Y
6)Throttle bypass $12 1hp Y
7)Thermostat $55 3 hp Y
8)X pipe $300 7-10 hp Y
9)High flow or no cats 500-700 hp?? Maybe

11)Intake manifold $700 15-20 hp Y
12)Throttle body $400 15 hp Y
13)Ecu reprogram $400 30hp Maybe
14)Headers $800-1500 30-40hp Not most
15)Cam $400 hp?? ??
16)Heads $1500-3000 hp ?? ??
17)Supercharger $5000-7000 150+hp??
18)Turbo
19)NOS
20)Methanol?
The reason you don't see a list like that is there are to many variables and assumptions about what a product makes. Some headers make more power than others. There are differnt cams for different applications and how much power you want to make. A lot of the power gains you quoted are the manufactures numbers which are usually not to accurate. Ex. 10)MAF sensor $325 15 hp? I really don't think so If you are refering to the Granetelli(I know my spelling sucks) its common knowledge that its pretty much junk and not worth the money. I think the problem with a list like that is too high of expectations people look at it buy a product based on it and when they don't get the power they were expecting they get :mad My advise for you and new owners is to talk to people on the board do some research and if you can go for a ride in peoples cars who have the mods you are considering.
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Old May 13, 2004 | 06:12 PM
  #3  
mdhmi's Avatar
mdhmi
Team Owner
 
Joined: Jul 2003
Posts: 20,474
Likes: 2
From: Detroit
Default Re: C5 Power Modification Guide (pdykinga)


Yes to numbers 1, 2, 4, 14 (if you include tuning which is another $500).

Mark
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Old May 13, 2004 | 06:41 PM
  #4  
'06 Quicksilver Z06's Avatar
'06 Quicksilver Z06
Team Owner
 
Joined: Aug 2003
Posts: 38,314
Likes: 35
Default Re: C5 Power Modification Guide (blackbelt)

I was hoping some people with more expertise than me would help finish/edit this list and we could post it on the site for the new owners, like me :)

Modification path for C5
Product Cost Hp increase Street Legal

1)Intake $200-400 15-20 hp Y
2)cold air screens $100 3-5 hp Y
3)hood seal $12 ½ hp Y
4)Exhaust $500-1500 5 hp Most
5)Powerduct $200-300 hp?? Y
6)Throttle bypass $12 1hp Y
7)Thermostat $55 3 hp Y
8)X pipe $300 7-10 hp Y
9)High flow or no cats 500-700 hp?? Maybe

11)Intake manifold $700 15-20 hp Y
12)Throttle body $400 15 hp Y
13)Ecu reprogram $400 30hp Maybe
14)Headers $800-1500 30-40hp Not most
15)Cam $400 hp?? ??
16)Heads $1500-3000 hp ?? ??
17)Supercharger $5000-7000 150+hp??
18)Turbo
19)NOS
20)Methanol?

The reason you don't see a list like that is there are to many variables and assumptions about what a product makes. Some headers make more power than others. There are differnt cams for different applications and how much power you want to make. A lot of the power gains you quoted are the manufactures numbers which are usually not to accurate. Ex. 10)MAF sensor $325 15 hp? I really don't think so If you are refering to the Granetelli(I know my spelling sucks) its common knowledge that its pretty much junk and not worth the money. I think the problem with a list like that is too high of expectations people look at it buy a product based on it and when they don't get the power they were expecting they get :mad My advise for you and new owners is to talk to people on the board do some research and if you can go for a ride in peoples cars who have the mods you are considering.
:iagree: Another problem is that, believe it or not, some people think the hp gains are cumulative. 15hp from a throttle body? Doubtful. Headers 30-40hp? Cats or no cats? Tuning or no tuning? Stock cats or hi flo cats? See where this is going
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Old May 13, 2004 | 11:09 PM
  #5  
Bigben's Avatar
Bigben
Pro
15 Year Member
 
Joined: Oct 2003
Posts: 583
Likes: 40
From: Sacramento
Default Re: C5 Power Modification Guide (EB20003)

If I was starting over I would just find a good shop/vendor talk to them about your budget and buy the stuff that really works. I was real resistant to heads and cam at first. Now I don't know why.

1) Intake
2) Exhaust
3) Andy's $3500 Head and cam package or a similar package would beef things up pretty well.
4) Get it tuned.

With just those four things you would be faster then 95% of all cars on the road.

A lot of people spend a lot of money on bolt on stuff that doesn't do much for performance and that stuff adds up fast.




[Modified by Bigben, 10:09 PM 5/13/2004]
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Old May 14, 2004 | 01:31 AM
  #6  
pdykinga's Avatar
pdykinga
Thread Starter
Racer
 
Joined: May 2004
Posts: 414
Likes: 0
From: Tucson Az
St. Jude Donor '04 & '05
Default Re: C5 Power Modification Guide (Bigben)

boy, head and cam sure seems like the way to go, any downside? idle?

thanks
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