Tuning the 2.4L Tigershark? - Jeep Renegade Forum
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post #1 of 25 (permalink) Old 04-25-2016, 11:16 AM Thread Starter
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Tuning the 2.4L Tigershark?

I've become accostumed to the 300 HP and 300 lb-ft of torque in the V8 the Jag offers. After the trade-in sometime this week, I'll be driving a Renegade with the 2.4L Tigershark. I was wondering if it is possible to tune this engine for a little more power. I'm not expecting to have sub-6s 0-60 or anything like that. I'd have to do an engine swap.

But at least, I'd like to think 200 HP is achievable with the Tigershark. Is it?
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post #2 of 25 (permalink) Old 04-25-2016, 11:31 AM
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Is the engine fitted to other vehicles? If so, are any tuning parts available? Go from there. We didn't get this engine in the UK for our Renegades.


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post #3 of 25 (permalink) Old 04-25-2016, 11:57 AM
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I would look on the Dodge Dart forums, I bet money that at least one person has added intake, exhaust, and possible ECU.

I have seen some ridiculous mods done on youtube to our 1.4L Turbo, (blow-off valve, Intake, Muffler delete, and abarth tuned piggy back ECU, that made their Jeep run like a stuck pig.

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post #4 of 25 (permalink) Old 04-25-2016, 12:24 PM
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There's a catback exhaust. No idea if it actually helps or just sounds different.

I wouldn't be surprised if someone comes up with a header. The exhaust on the TH, coming forward out of the head and curving down, is a lot like the exhaust in my wife's '01 Integra, which also comes forward and then curves down. It would probably be pretty easy to build a header.

Maybe you should approach an exhaust header manufacturer like Tube Technologies Inc. TTI has made Mopar-only headers for a long time now and I've worked with their products on several vehicles, both older RWD stuff and more current FWD. They could probably make a nice shorty setup that would drop in.

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post #5 of 25 (permalink) Old 04-25-2016, 07:40 PM Thread Starter
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Alright, it's just a thought.

I read on the dart forums about supercharging the tigershark (or was it turbocharging). But they say it requires some work. From what I've read, extracting any real power requires cams, etc.
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post #6 of 25 (permalink) Old 04-25-2016, 08:42 PM
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Well the 2.4 only has one cam. The ECU controls lift, duration, and timing on the intake side and the exhaust is fixed to the lobes.

Unless someone does tuning to the ECU, there isn't much hope for the 2.4.
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post #7 of 25 (permalink) Old 04-25-2016, 10:15 PM
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Exhaust work should free up some power. Getting it to flow as freely as possible is key. Given that most states have emissions laws/restrictions you'll most likely have to have some sort of muffler (a glass pack would be your best bet unless you find/make a cover that looks like a muffler ala first year Abarths in the US).

From experience, intakes alone don't do much unless you're running a turbo/super. On a naturally asperated motor, you'll get a nice intake growl. If you have a sort of ram air set up, there will be some noticable power/torque increases. I have worked with a few NA vehicles that have a sort of "hidden" ram air/cold air function (secondary tubing that feeds from the bottom of the car up to the airbox aside from the main opening). A short ram with a shield worked well with those vehicles given that relativity cool air was availble from two directions. You can also have the trottle body ported for better throttle response.

I'm not entirely sure how the 2.4s are set up on the Renegades Vs the Dart. There are some differences between the 1.4 Renegades Vs Abarths and Darts (when I say this, I mean where the airbox sits and other piping).

Not a lot of bolt on mods available for the 2.4 from what I remember but even with them, they're nothing compared to / without an ECU tune. Madness, Modern Performance, etc. may be able to help.

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post #8 of 25 (permalink) Old 04-25-2016, 11:24 PM
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Originally Posted by RenegadeOfFunk View Post
Alright, it's just a thought.

I read on the dart forums about supercharging the tigershark (or was it turbocharging). But they say it requires some work. From what I've read, extracting any real power requires cams, etc.
That can be said about almost any platform, if you want to do it correctly and reliably, it's going to cost a chunk of change. Changing a car from N/A to F/I usually requires a ton of work, not just bolting a few parts on.

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post #9 of 25 (permalink) Old 04-25-2016, 11:29 PM
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Originally Posted by RenegadeOfFunk View Post
I've become accostumed to the 300 HP and 300 lb-ft of torque in the V8 the Jag offers. After the trade-in sometime this week, I'll be driving a Renegade with the 2.4L Tigershark. I was wondering if it is possible to tune this engine for a little more power. I'm not expecting to have sub-6s 0-60 or anything like that. I'd have to do an engine swap.

But at least, I'd like to think 200 HP is achievable with the Tigershark. Is it?
Since speed seems to be a main concern for you, I'd shop around for other vehicles. I'm happy with the power of my Renegade, but it's not fast and it's not exactly an engaging driver's car. I suppose with a stick, it could be a little more fun but then you don't get the 2.4 and it still won't be a fast vehicle.

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Last edited by PNW; 04-25-2016 at 11:30 PM. Reason: Typo
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post #10 of 25 (permalink) Old 04-26-2016, 07:27 AM Thread Starter
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Speed isn't a priority for me at all. Eventually I'll buy something sporty for that purpose.
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