4 Cyl 2.5 More Power

[com4]

Hello 

What I can do to more power and more torque in lower rpm? engine 4 cyl 2.5.

thanks

[dasbulliwagen]

www.4bangerjp.com

 

There isnt much you can do to a 2.5 to get much more out of it, especially in the low end. But if there is anything, youll find it on the site I posted above.

[yxmj]

www.4bangerjp.com

 

There isnt much you can do to a 2.5 to get much more out of it, especially in the low end. But if there is anything, youll find it on the site I posted above.

 

Any you a member here....when you try to sign up it says it is disabled.....what am i doing wrong?

[54bobby]

you have to contact them through there face book page and request a membership. 

[mnkyboy]

Best thing you can do is gears.

[pettus253]

I have a 2.5L wrangler. Put a 4.0 throttle body, new 4 hole fuel injectors, electric fans, MSD wires and coil, K&N intake, 4.88 gears. Have noticed a slight improvement. Plan on doing the same to my 2.5 MJ. But gears are probably your best bet.  

[com4]

Hi 

How I find 4banjerjp in face? and pettus253, do you have a good torque in lower rpm? 

thanks

[mnkyboy]

https://www.facebook.com/groups/308364993424/?ref=ts&fref=ts

[pettus253]

Com4, I have a 5 speed in my Wrangler and automatic in the Manche. Its not really a fair comparison. When I change the parts in the MJ i'll let you know what differences I notice.

[Eagle]

More power and torque in a 2.5L? One word: "Cam"

[yxmj]

https://www.facebook.com/groups/308364993424/?ref=ts&fref=ts

 

Any other way?????....I do not have or want a facebook page :doh:

[johnr]

what choses are there for a cam in a Renix motor?

[54bobby]

 

https://www.facebook.com/groups/308364993424/?ref=ts&fref=ts

 

Any other way?????....I do not have or want a facebook page :doh:

 

start a fb page, join 4banger then delete it.

[dasbulliwagen]

The 4.0 throttle body and injectors only work on 91 and newer models. There's not as much possible with the TBI models. Though I wonder if there would be any issues with the TBI adapting to changes. It might do just fine. I have seen on 4banger too a writeup about installing a larger injector. Anything is possible with enough time and money.

[mnkyboy]

 

https://www.facebook.com/groups/308364993424/?ref=ts&fref=ts

 

 

Any other way?????....I do not have or want a facebook page :doh:

Give a login name and email and I will send it to the guy who runs the page.

[johnj92131]

Hello 

What I can do to more power and more torque in lower rpm? engine 4 cyl 2.5.

thanks

 

One word:  "Supercharger"

 

You want more low end grunt, then you want a supercharger.  Did not say it was cheap, but it will do more for that 2.5 4 banger than anything else.  Especially big improvemet at the LOW end.  Everything else you can do for the 4 banger will improve the top end, but not the low end.

 

Now, gears will deliver more torque to the ground, but your engine will be screaming on the freeway.  A big diesel engine conversion will also get you low end power in spades.  But you will need $10K or so for starters.

[yxmj]

 

Hello 

What I can do to more power and more torque in lower rpm? engine 4 cyl 2.5.

thanks

 

One word:  "Supercharger"

 

You want more low end grunt, then you want a supercharger.  Did not say it was cheap, but it will do more for that 2.5 4 banger than anything else.  Especially big improvemet at the LOW end.  Everything else you can do for the 4 banger will improve the top end, but not the low end.

 

Now, gears will deliver more torque to the ground, but your engine will be screaming on the freeway.  A big diesel engine conversion will also get you low end power in spades.  But you will need $10K or so for starters.

 

[cruiser54]

Install a high altitude CPS. 

[benjy_26]

 

 

 

 

Hello

What I can do to more power and more torque in lower rpm? engine 4 cyl 2.5.

thanks

One word: "Supercharger"

 

You want more low end grunt, then you want a supercharger. Did not say it was cheap, but it will do more for that 2.5 4 banger than anything else. Especially big improvemet at the LOW end. Everything else you can do for the 4 banger will improve the top end, but not the low end.

 

Now, gears will deliver more torque to the ground, but your engine will be screaming on the freeway. A big diesel engine conversion will also get you low end power in spades. But you will need $10K or so for starters.

Hold the phone! Someone makes a SC for the TBI 2.5?

[Eagle]

Install a high altitude CPS.

Are those still available? I thought I bought the last one in captivity about four years ago.

[cruiser54]

 

Install a high altitude CPS.

Are those still available? I thought I bought the last one in captivity about four years ago.

 

I did from the dealer. But as it turned out the PC307 from RockAuto was a Siemens, made in France. I think they're still available. 

[88whitemanche]

Outlaw just recently grabbed one for his 4cyl

 

http://comancheclub.com/topic/43539-the-squirrel-master/

[johnj92131]

 

 

Install a high altitude CPS.

Are those still available? I thought I bought the last one in captivity about four years ago.

 

I did from the dealer. But as it turned out the PC307 from RockAuto was a Siemens, made in France. I think they're still available. 

 

 

cruiser54, Please tell me more about the high altitude CPS.  Does it fit the High Output 4.0?  Am I correct that it advances the timing a few degrees to compensate for lower density air at high altitude?  Has anyone used this on the 4.0? 

 

Thanks for any information.

[benjy_26]

Oreiley's has a high altitude unit marketed under their BWD line.

[Eagle]

cruiser54, Please tell me more about the high altitude CPS.  Does it fit the High Output 4.0?  Am I correct that it advances the timing a few degrees to compensate for lower density air at high altitude?  Has anyone used this on the 4.0? 

 

Thanks for any information.

You are correct in what it does. It was for the Renix models only. For the HOs, the ECU handles that function.

 

I don't think it adds any power or torque, unless you run mid-grade or hightest gas. The Renix engines have a knock sensor to retard the spark when they sense detonation. And that usually happens under load. What the high altitude CPS really does is allow more advance under light load, which boosts the fuel economy.