Recommendations for more power while staying N/A

[mysta_sandman]

I've been tuned for a while by PBD and while I love it, I'm definitely wanting some more power. I prefer track driving and country roads so I'm aiming to make a Sleeper car. No badges etc.

Aside from a CAI swap, I'm bone stock. Running 93oct as well.

Originally, I wanted to go E85 and swap out injectors, but there isn't a lot of E85 options around me.

I was thinking of doing a Manifold/Throttle Body swap and then a seat delete to free up some weight.

What else are you guys doing to get some better HP and Torque?

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[WildHorse]

Cobra Jet manifold, monoblade, pmas cold air, comp stage 3 cams, cylinder head porting, long tubes, freeflow exhaust, killer LUND tune, hello mid 10's.

 

[YoloBathsalts]

I've been tuned for a while by PBD and while I love it, I'm definitely wanting some more power. I prefer track driving and country roads so I'm aiming to make a Sleeper car. No badges etc.

Aside from a CAI swap, I'm bone stock. Running 93oct as well.

Originally, I wanted to go E85 and swap out injectors, but there isn't a lot of E85 options around me.

I was thinking of doing a Manifold/Throttle Body swap and then a seat delete to free up some weight.

What else are you guys doing to get some better HP and Torque?

If you want a decent hp boost and already have a pro tune, get headers, and finish your exhaust. run datalogs to your tuner and get it refitted. 20-35hp gain with a 40lbs weight lose. IIRC back seat delete only takes off 65lbs?
you'll feel that for sure. best of luck

 

[mysta_sandman]

Cobra Jet manifold, monoblade, pmas cold air, comp stage 3 cams, cylinder head porting, long tubes, freeflow exhaust, killer LUND tune, hello mid 10's.

I'm thinking of going to Lund. I have an email chain with them already.

The low end torque is there with PBD but the shifts are wicked aggressive. Plus, I'm looking for some more throttle sensitivity.

I'm thinking of going catless but if go ping tubes, it'll be deafening with my current exhaust set up lol

 

[Idaho2018GTPremium]

For me, small gain mods aren't worth it (i.e, single CAI swap, catback, etc.). Those won't add much power. Depending on how big you want to go and want a noticeable improvement:

Level 1) Intake/exhaust full bolt-on route: CAI, ported '18 Manifold (much cheaper than Cobra jet and only a few hp less), headers, catback, tune. All of these combined should make for some pretty decent gains.

Level 2) Full meal deal: The intake/exhaust mods above, plus: ported/polished heads and comp cams aftermarket cams. Stage 2 or 3 (with 3 making a bit more power at the expense of drivability and low-end torque).

Level 3) To get the max. power naturally aspirated, after you've done the above items, look into things liked ported throttle body, electric water pump, under-drive pulley, etc.

4 - Weight) For weight reduction, consider lighter wheels (taking off 1 lb of rotational weight is equivalent to removing 3 lbs sprung weight), rear seat removal, driveshaft replacement, lighter brake rotors, lightweight battery, remove engine cover, sound tube (not sure if 16s have the sound tube), only fill to half tank gas (~6.1 lbs/gal; 1/2 tank saves 49 lbs), fill windshield wiper reservoir half full (saves ~4 lbs).

Some of the weight stuff is free (i.e., not filling the tank and reservoir full), but requires more frequent fill ups.

 

[WildHorse]

CAI, ported '18 Manifold (much cheaper than Cobra jet and only a few hp less)

Alejandro Flores got 40 more horsepower from a CJ over a ported 18. He made a video cause he heard the same thing haha.
Edit: here

 

[mysta_sandman]

For me, small gain mods aren't worth it (i.e, single CAI swap, catback, etc.). Those won't add much power. Depending on how big you want to go and want a noticeable improvement:

Level 1) Intake/exhaust full bolt-on route: CAI, ported '18 Manifold (much cheaper than Cobra jet and only a few hp less), headers, catback, tune. All of these combined should make for some pretty decent gains.

Level 2) Full meal deal: The intake/exhaust mods above, plus: ported/polished heads and comp cams aftermarket cams. Stage 2 or 3 (with 3 making a bit more power at the expense of drivability and low-end torque).

Level 3) To get the max. power naturally aspirated, after you've done the above items, look into things liked ported throttle body, electric water pump, under-drive pulley, etc.

4 - Weight) For weight reduction, consider lighter wheels (taking off 1 lb of rotational weight is equivalent to removing 3 lbs sprung weight), rear seat removal, driveshaft replacement, lighter brake rotors, lightweight battery, remove engine cover, sound tube (not sure if 16s have the sound tube), only fill to half tank gas (~6.1 lbs/gal; 1/2 tank saves 49 lbs), fill windshield wiper reservoir half full (saves ~4 lbs).

Some of the weight stuff is free (i.e., not filling the tank and reservoir full), but requires more frequent fill ups.

Awesome advice. I really appreciate the detailed reply.

Sounds like stage 2 would be my best bet. I'm looking to keep the car street friendly but to have it as a sleeper and get on it and smoke Camaros whenever possible.

So far, I've just done the CAI, Tune and a Catback swap. I've thought about going catless and changing headers but MA is a PIA for emissions.

So I'm thinking my best bet right now would probably be catless, manifold swap and maybe cams/headers.

 

[Idaho2018GTPremium]

Alejandro Flores got 40 more horsepower from a CJ over a ported 18. He made a video cause he heard the same thing haha.
Edit: here

Uh, these guys are morons. That video is ridiculous. The car dyno'd 455 rwhp with a stock 18 manifold and stock exhaust manifolds. In fact, the video description says "With a stock 18 manifold, get upgraded to a Cobra jet setup with longtubes, and the difference is nuts." In addition to adding long tube headers, the intake manifold swap wasn't only the cobra jet. He changed the CAI, throttle body, intake manifold, and added long tube headers. There were too many changes to say the cobra jet alone is worth 30rwhp over a ported 18 intake. That's cobra jet plus long tubes and the entire intake train. We know long tubes make up most of that 30 rwhp, so my stance stands, that the Cobra jet is a lot of money for a small improvement over a ported '18 intake.

 

[jmeiers]

This!

And this is the graph that shows why the CJ will kick 2018-ass at the drag strip or roll race, especially with an A10 shifting at 8,000 rpms! You can infer right where the 2018 manifold HP number will end up when it finally gets to 8,000.

 

[AZ18yote]

This!

And this is the graph that shows why the CJ will kick 2018-ass at the drag strip or roll race, especially with an A10 shifting at 8,000 rpms! You can infer right where the 2018 manifold HP number will end up when it finally gets to 8,000.

As long as not wanting to run a flex tune...

 

[jmeiers]

As long as not wanting to run a flex tune...

E85 only for me but feel free to use whatever "CAI" you like. The point is the Cobra Jet will beat the 2018 manifold. All the fastest N/A cars have a Cobra Jet.

 

[Andy13186]

Lightweight wheels and tires and lightweight rotors will free up some HP.

 

[Idaho2018GTPremium]

This!

And this is the graph that shows why the CJ will kick 2018-ass at the drag strip or roll race, especially with an A10 shifting at 8,000 rpms! You can infer right where the 2018 manifold HP number will end up when it finally gets to 8,000.

Not many are shifting their stock Gen 3 Coyotes at 8000 rpm. What this dyno graph shows is that the avg. hp of the stock '18 manifold from 5800-7400 rpm is 535 hp on a Gen 3 Coyote with this setup. The avg. hp of the Cobra Jet from 6300-7900 rpm is about 541 or 542 hp. If you think those are massive gains, I don't know what to tell you. 6-7 (crank) hp is marginal and isn't going to translate into amazing gains at the drag strip. Lowering the engine, bending fuel rails, etc., needed to install it...not worth it IMO on a stock internal engine.

That said, if someone went with a Stage 3 cam setup that are designed to rev to 8000 rpm, then the Cobra jet would make sense, allowing the cams to make much more top end power above 7400 rpm than a stock manifold. The Cobra Jet would fall in my "3rd category" of someone who has done FBO and heads/cam, and is looking to get every bit of power out of an NA engine. On stock cams, or mild aftermarket cams, a ported '18 will hold its own vs. a Cobra Jet, and help make more midrange torque. That's another thing about this curve - the '18 manifold makes more power below 6200 rpm at nearly every point on the curve, with the exception of 5300-5500 rpm, which the Cobra jet is making slightly more due to the shape of the torque curve.

To the original poster: Don't worry about the E85 tune on a mostly stock engine. E85 tune makes a huge difference in a supercharged engine, but again, somewhat marginal in an otherwise mostly stock or naturally aspirated engine. Yes, an E85 tune makes more power on an NA engine, but it translates to small improvements at a drag strip.

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