I'm considering upgrading to a S2 IM for my GSR.

Just wondering experiences from anyone here who's done it (gains to expect).

Also, do you have to upgrade the ECU ? Or can it run on the regular gsr one ?

Thanks

 

yeah your stock ecu is fine to run on it, when i swapped in mine it has a nice lil whistle a more flow you might notice it, remember it eliminates the secondary runners so if you thought your vtec was at 5570 nope it's at 4800.

 

i thought vtec was 4400

 

So if the secondaries are removed,
do you get that awsome sound as if they're open all the time.
whhhaaaaaaaa!

I've heard 6-8 whp gain,
how much did you get yours for?
how much to install?

 

if you are completely stock and you switch out your IM your midrange is going to experience a good loss but I imagine it should make up for it uptop....?

 

I haven't installed mine yet because I am waiting to put in cams, manifold, and reproggaming my ecu for a single runner set up. I heard you don't gain hardly any power when you don't have anything else on your engine.

 

I have type R cams in my gsr right now, adjustable cam gears which I'm not putting in till I can dyno it, and a CAI which I would have to change with the new IM.

Wouldn't I be able to adjust for that lost midrange power with my cam gears?

A few people have told me to go with the S2 IM.
would you think with my setup it would be worth it?

How much are the manifolds/install?

Thanks

 

So my ECU will be looking for a second runner, and will that itself decrease power gains?

 

I installed a skunk 2 im on my gsr. All I have is i/h/e and suspension mods. I feel a big difference when v-tec kicks in at around 4500. Its a little louder but i feels good.

 

From what I understand the secondary runner works off a vacuum and not the ecu. Is this correct? If it is then your stock ecu will work fine.

 

yes thats correct.

 

use a sohc vtec ecu from a 92-95 civic. the secondaries work by vacuum yes but the computer will add fuel still. you'll be running too rich. try using a skunk ecu and lean it out with a vafc.

 

As per the dyno runs I saw, the Sk2 in a stock setup will give about 6-8 up top with a small sacrifice in the midrange. With some good tuning you can totally alter this however, and get good gains throughout (cams).