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-   -   Worth the $$$ (http://www.wranglerforum.com/f282/worth-the-95278.html)

ETJeepster 05-24-2011 11:47 PM

Worth the $$$
 
I have a 98 TJ 4.0 5spd, looking to boost horsepower, looking at Banks air intake, & exhaust. Is it worth the cash?? or are there better ways to boost power?

doclouie 05-24-2011 11:55 PM

Sorry the intake or exhaust will not help you with horsepower. Exhaust will only make it sound better and the intake will do nothing except make it sound worse. If you have larger tires regear to get some horsepower back.

Jerry Bransford 05-25-2011 12:00 AM

Don't waste your hard-earned $$$. No matter how good the hype sounds, it's not going to help the TJ's performance. The TJ's air intake is not restricted by the OE air intake anyway, it was specifically (!) designed to be free breathing. It can, in fact, easily flow more air than the engine can consume at wide-open throttle and redline rpms. And besides, at anything less than wide-open throttle, the throttle body's butterfly valve plate is the sole restriction to air flow to the engine so the air intake isn't robbing the engine of any performance whatsoever.

MikeMTJ 05-25-2011 12:01 AM

Swap a V8 in.

Honestly, that's the only way to add more power to a TJ. Unless your gear ratio is off in your diffs.

03Ruth 05-25-2011 12:49 AM

As stated above dont waste your money. I ended up replacing my exhaust only because there was a hole in the factory muffler. The intake was just a spur of the moment but that did nothing but make it sound better. The only gain in power I got was when I regeared.

Maltese 05-25-2011 04:48 PM

Actually, regearing does not increase horse power either. However it will allow you to use the power you have more efficiently, and effectivly.

danieldlg_13 05-25-2011 04:54 PM

Maybe this will help?
Jeep Wrangler Forum - Search Results

danieldlg_13 05-25-2011 04:57 PM

The increasing the horsepower via intake or exhaust should be made a sticky!

Indy 05-25-2011 05:05 PM

Quote:

Originally Posted by danieldlg_13 (Post 1261806)
The increasing the horsepower via intake or exhaust should be made a sticky!

X2

Supercharger/Turbo, V8 or a stroker are the only ways to significantly increase engine HP.

danieldlg_13 05-25-2011 05:08 PM

I'm working on the sticky.

steelynorm 05-25-2011 05:56 PM

Jp magazine article?
 
Newb,
Here but just happen to be looking at this article the other day.

1998 Jeep Cheroke XJ Project Mileage Master Part III - Jp Magazine

So is JP magazine just out to pad their advertisers budgets, because they have dyno results.

According to their data there is an increase albeit negligible.

Make your own decision i guess.

JamesHolmes 05-26-2011 07:35 AM

Paint on some racing stripes, that should get you an extra 15 ponies.

Peepers 05-26-2011 07:56 AM

Quote:

Originally Posted by steelynorm (Post 1261906)
Newb,
Here but just happen to be looking at this article the other day.

1998 Jeep Cheroke XJ Project Mileage Master Part III - Jp Magazine

So is JP magazine just out to pad their advertisers budgets, because they have dyno results.

According to their data there is an increase albeit negligible.

Make your own decision i guess.

If you notice, they don't even test below 3000 rmp or give a stock dyno run... my jeep might see over 3000 rpm once a day...

If you also knowtice in every run they gain almost 30 hp from 3000 rmp to 4500 rpm... so just think of how much you lose running at 2000 rpm...

97sport09 05-26-2011 08:04 AM

My Aem intake and banks exhaust helped me out tremendously, here is why though. My old catalytic converter was so clogged up that I was bogged down on power, I couldn't even redline and it almost felt like it was firing on not all cylinders. After replacing the whole exhaust and putting in a high flow cat it was like a brand new jeep again. I don't think the intake was worth the money though that's for sure, the exhaust did help me out though plus the sound is amazing, can't beat it.

jgorm 05-26-2011 09:36 AM

Quote:

Originally Posted by steelynorm (Post 1261906)
Newb,
Here but just happen to be looking at this article the other day.

1998 Jeep Cheroke XJ Project Mileage Master Part III - Jp Magazine

So is JP magazine just out to pad their advertisers budgets, because they have dyno results.

According to their data there is an increase albeit negligible.

Make your own decision i guess.

I did 18 dyno pulls on my jeep for intake testing. The end result is that you might gain a couple hp on average, but its not statistically significant in the least.
Jeep Wrangler 18 dyno pulls for CAI testing - Trick Tuners Forums

http://www.tricktuners.com/Uploads/2...s_13_to_18.jpg

[code]
Condition Avg HP Avg TQ 3SD HP 3SD TQ
stock 140.92 177.49 2.79 3.68
No Horn 142.12 176.69 3.73 6.06
Tire pressure 146.96 181.20 2.07 10.54
No Intake 151.72 183.12 2.46 5.54
Cowl Intake 149.32 185.71 5.57 5.75[/code]

ETJeepster 05-27-2011 08:15 AM

Thanks
 
Thanks for the input. I don't think I am ready to jump to the 8, I just can't see taking out a perfectly good engine. It just seems sacrilegious. I am going to do the exhaust, even if the HP doesn't boost I like the sound and I want the chrome pipe.


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