COBB SRI HP Loss

[viper117630]

Hey Guys,

Every once in a while I hear a claim that the COBB SRI has a HP loss vs the stock air box. To me that doesn't make any sense but I was wondering if anyone has before and after dynos to show the gains or loss. I have the COBB SRI and I did notice a gain but cant prove it since I didnt go to the dyno. Thanks for any help!

 

[arkenzo]

Hey Guys,

Every once in a while I hear a claim that the COBB SRI has a HP loss vs the stock air box. To me that doesn't make any sense but I was wondering if anyone has before and after dynos to show the gains or loss. I have the COBB SRI and I did notice a gain but cant prove it since I didnt go to the dyno. Thanks for any help!

Stop talking to the person who suggested that "sometimes the cobb sri has an hp loss vs stock airbox".

 

[viper117630]

Yeah I know lol. I laughed at him when he said it. Just wondering why anyone would even think that.

 

[CoolWhip]

Hey viper I saw you posted on one of my youtube videos. I'm not sure who that guy is but from what I can tell the SRI and AP have made a huge difference in my car.

I'm getting my car dyno'd soon comparing a couple of the AP maps, Hopefully the v103 are out by then.

 

[viper117630]

Oh thats your white speed? Nice! Yeah, I know that he is full of Sh*t but I was just wondering if anyone has heard of it. It just sounds so ridiculous.

 

[fragchild]

I did 251whp and 276wtq with just a cobb SRI on a Dynojet dyno. I seriously doubt I could make that with the stock box.

 

[CnoTataymo]

I did 251whp and 276wtq with just a cobb SRI on a Dynojet dyno. I seriously doubt I could make that with the stock box.

Wow, those are some nice numbers.

 

[Speed3Rookie]

What's the stock hp/tq numbers?

 

[SharkDiver]

I have never heard anyone ever say that the sri or cai lost power compared to the stock box...Thats crazy talk..

 

[hectik1]

I did 251whp and 276wtq with just a cobb SRI on a Dynojet dyno. I seriously doubt I could make that with the stock box.

Depends on the dyno. Stock MS3 on AMS (Evo tuner) dyno.....255whp/286wtq. Dynos are inaccurate.(deadhorse

 

[AutoEuphoria]

A cold air intake is going to be nearly impossible to test on a dyno since it is very unlike actual underhood conditions. In the real world, the underhood temps would be much cooler from a much larger volume of air. the Cobb SRI seems to be a more free-flowing design than the stock box, so I can't see how it'd hurt.

 

[strytnyne]

hell anything would improve over factory.

 

[nhluhr]

Well honestly when you consider the many variables at play, a dyno really isn't the best place to test this. Almost all dyno runs are performed with the hood open and a fan blowing towards the intercooler. This means an aftermarket intake like Cobb's is able to draw room temperature air and thus benefit hugely from its reduced flow restriction.

However, when you consider other things like intake resonance and where the air is coming from with a closed hood, the picture is less clear. I think a road-dyno is probably the better comparison here.

I think this question would be far less equivocal if the Cobb had some sort of shrouding to ensure it only draws cool outside air from the front bumper.

One thing is for sure: Cobb advertsises about half the advertised gains of other cold air intakes on the market.

 

[jp4130]

Intake resonance has no effect with a turbo car. With my Cobb sri while the car is moving the intake temps are very close to ambient.

 

[ms3jake]

I did 251whp and 276wtq with just a cobb SRI on a Dynojet dyno. I seriously doubt I could make that with the stock box.

Could you post this dyno? Its rare to see a dyno with the cobb sri only.

 

[15min5k]

Well honestly when you consider the many variables at play, a dyno really isn't the best place to test this. Almost all dyno runs are performed with the hood open and a fan blowing towards the intercooler. This means an aftermarket intake like Cobb's is able to draw room temperature air and thus benefit hugely from its reduced flow restriction.

However, when you consider other things like intake resonance and where the air is coming from with a closed hood, the picture is less clear. I think a road-dyno is probably the better comparison here.

I think this question would be far less equivocal if the Cobb had some sort of shrouding to ensure it only draws cool outside air from the front bumper.

One thing is for sure: Cobb advertsises about half the advertised gains of other cold air intakes on the market.

Cobb does their test on a Mustang Dyno@high elevation. Other's have gotten #'s much higher using different dyno's so your statement mines obsolutely dick X100.

 

[fragchild]

Here's the dyno, I actually made more power with the hood CLOSED. So nhluhr you're not completely correct.

Run 2 was a 5th gear pull.
Run 3 was in 4th with the hood closed, My first run isn't on here but it was lower than both with the hood open.

There were 3 other MS3's that day, in various stages of mods. I was right in the middle on whp and wtq

 

[nhluhr]

so your statement mines obsolutely dick X100.

404 English not found

Here's the dyno, I actually made more power with the hood CLOSED. So nhluhr you're not completely correct.

Run 2 was a 5th gear pull.
Run 3 was in 4th with the hood closed, My first run isn't on here but it was lower than both with the hood open.

Interesting. Where's the dyno of the car with stock intake and identical atmospheric conditions?

 

[Silver Ecstasy]

What's also weird is, you see how smooth the red line is vs blue line?

Is the red line before the SRI and blue after?

 

[ZooZoom]

Here's my last dyno run on a DynoPack. Typical power figures are lower than DynoJet and a bit higher than a Mustang dyno.

Mods were ETC TMIC, Cobb SF intake and Forge BPV