[BigJack75]

Is there a consensus on how much HP/TQ each bolt on mod will give you? For example we all know intakes don't do shit. It's just noise so an intake would be: 0 HP/TQ regardless of what the fucken advertisement says.

I want to know what increase in HP/TQ there is for each mod below.

Intake (cold or hot) = 0 (all noise)

Catback = 0 (all noise)

Intercooler = 0 (better iat)

Charge pipe = 0 (insurance when tuning)

Tune = 50-100 depending on stage and supporting mods

Catted Downpipe = 20

Catless Downpipe = 30

Oh and I am mostly interested in gains in the low to mid range so even if a mod makes 10 hp at 7k rpms it really doesn't matter.

[Eddien123]

I mean, to say an intercooler does nothing is entirely wrong. Yes, if you just strap a better intercooler on a stock car it won't do anything. But all these mods listed need supporting mods and a tune to get a lot out of them. But if you were to tune the car to work with a new intake I'd say you could expect maybe 4-5. A free flowing cat back exhaust can free up another 10 maybe. Again, all depends on the tune.

[T_H_O_M_A_S]

intercooler does a lot when you crank op the boost , heat is the primary source of powerloss

[T5viggen]

Originally Posted by Eddien123

I mean, to say an intercooler does nothing is entirely wrong. Yes, if you just strap a better intercooler on a stock car it won't do anything. But all these mods listed need supporting mods and a tune to get a lot out of them. But if you were to tune the car to work with a new intake I'd say you could expect maybe 4-5. A free flowing cat back exhaust can free up another 10 maybe. Again, all depends on the tune.

To go more with this, as stated they are supporting mods for a tune. You'd be better to say, if I don't have XXXX part and I get a tune how much power am I losing. But it's still hard to say, very few people (even tuners) will take the time to dyno each part on a stock car. And some like the DP/Exhaust will put better numbers when paired with each other than individually. Best bet is to look at a tune and see what HP/TQ figures it seems to be doing and then look at the hardware needed to support it.

[BigJack75]

Ok so what would be the difference in power for the 3 types of downpipes with a BM3 tune, charge pipe and intercooler?

Stock Downpipe
High Flow catted Downpipe
Catless Downpipe

[n55david]

Originally Posted by jack10525

Ok so what would be the difference in power for the 3 types of downpipes with a BM3 tune, charge pipe and intercooler?

Stock Downpipe
High Flow catted Downpipe
Catless Downpipe

It depends...

You cannot use absolute numbers to answer your questions.. because it varies based on variables... so... it just depends.

catless makes the most and the high flow one will be somewhere in the middle between catless and stock.

[mike@x-ph.com]

Originally Posted by Phantom10R

It depends...

You cannot use absolute numbers to answer your questions.. because it varies based on variables... so... it just depends.

catless makes the most and the high flow one will be somewhere in the middle between catless and stock.

On stock turbo high flow catted and catless will make same power

[Jnat]

Originally Posted by mike@x-ph.com

On stock turbo high flow catted and catless will make same power

That's what I've read, 5 whp at most on stock turbo. Upgrade turbo and the kittyless becomes more of a thing.