Looking for real power gain numbers

[Lumpydogs]

Hello All,

I'm looking for real world power gains achieved with the following mods, or combination of mods, on a NA 99-01 cobra motor. All constructive input is much appreciated.

-Full Length Headers

-Larger MAF

-Cold Air Intakes

-Larger or Polished Throttle Body

-Ported/Polished Stock Intake Manifold

Thanks

 

[01SVTSnake]

scratch the MAF and Throttle body. Combined you might get a whopping 2rwhp from them. Definitely not worth what they cost.

• If you want to get an intake stick with JLT
• Have "na svt" or "nazman" port your lower intake (Naz has been M.I.A with medical issues)
• get a set of longtube headers & matching mid pipe
• catback of your choice
• get gears. I recommend 4.30s if your staying with bolt-ons

 

[brkntrxn]

Jeff is into open track driving, so I highly doubt he will want a 4:30 gear. I imagine he is looking for a few bolt-ons that will provide him more power from mid- to full-throttle.


Jeff,

Without doing the necessary searching, several of your items listed do provide real world gains on the 99/01 NEs. Long tubes, P&P stock intake and JLT CAI are all proven bolt-ons and you will gain noticeable power and seat of the pants feel with them. I would put all three on and get another tune. I would absolutely get a tune with the long tubes and intake, but you can get away with running the existing tune with a JLT bolt-on.

Take it easy,

Kevin

 

[Un4GivN]

Well.. My car bone stock dyno'd 282/28x on a dynojet. I installed LTs, o/r X, and catback. Had the car tuned and it made 324/324 on a dynojet. That's 42rwhp from full exhaust/tune.

 

[The Red Monster]

My car bone stock dyno'd 282/28x on a dynojet. I installed LTs, o/r X, and catback. Had the car tuned and it made 324/324 on a dynojet. That's 42rwhp from full exhaust/tune.

Nice numbers!!!!!

i would say go for the long tubes and full exhaust.. a hint though, go with a company like hooker or equivelant so you have the option of pulling the tranny while the headers are installed if you ever need to swap a clutch or do a tranny rebuild. saves you quite a few headaches in the future

 

[2001SVTTT]

LOngtube headers + catless xhaust. Cold air intake + aggressive tune = 320rwhp

 

[STAMPEDE3]

Jeff is into open track driving, so I highly doubt he will want a 4:30 gear. I imagine he is looking for a few bolt-ons that will provide him more power from mid- to full-throttle.

Kevin

I loved 4.30s for open tracking.

 

[01greycobra]

When my car had just a JLT intake, 3.73's, and weld in flowmaster mufflers, it put down 318/315 on a dynojet.

 

[na svt]

Hello All, I'm looking for real world power gains achieved with the following mods, or combination of mods, on a NA 99-01 cobra motor. All constructive input is much appreciated.Thanks

-Full Length Headers 10-15hp max with good mid range tq gains

-Larger MAF--very little if any

-Cold Air Intakes--very little if any

-Larger or Polished Throttle Body--very little if any

-Ported/Polished Stock Intake Manifold--5-8hp

-Short runner intake--10-15hp at peak and 25-30hp at 7k

 

[99COBRA2881]

I loved 4.30s for open tracking.

+1. 4.30s Give these NA cobras some serious motivation out of the corners.

 

[blackbob]

Another thing to consider that I have done is intake spacer from Ron on Mach1Registry and a throttle body spacer too. One more thing will be a harmonic dampner like a Summit version ( it's good for what it is till 7k ) or a more expensive one like ATI or something.