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kikkin_wing
11-05-2009, 05:30 PM
Alright, so I have a 2.5 in my 98, and forgive me if this has already been discussed, but I couldn't really find a thread about this topic. What can I do, if anything to gain more HP out of this thing, maybe new ignition setup, exhaust, intake, or whatever.... I need some help on this one, I can't really find enough information to answer my question. I just want to add on parts to a motor that will give it it's full potential, and make it into some that would be unique.

twinjetguy
11-10-2009, 10:04 AM
I have a 1998 Mazda B2500 (a ford ranger) myself and have done a few things to it. Let's face it, these trucks are slow and down on power. Not much you can do to them except for say a turbo which I won't do because I just use my truck to move my motorcycles.

Anyway, there are a few things you can do. I have done the following:

K&N cold air intake
Airraid throttle body spacer
Cat back exhaust system with flowmaster muffler
Headers (I found the headers used on ebay for around $100, and they head the bungs for the sensors).

As for power gains, can't really say, I never had it dyno'ed. I know that I feel a difference and I had a huge improvement in gas mileage. One thing I have really thought about doing is ditching the crank mounted fan and installing a electric fan. This would free up a bit of power.

Fx4wannabe01
11-10-2009, 09:51 PM
Turbo it. Find a donor Tbird Super Coupe or a SVO Mustang.

twinjetguy
11-11-2009, 06:50 PM
I just picked up my Jet Performance module today. I live about an hour away from Jet so it worked out great. You can get them much cheaper from Summit Racing but I wanted instant gratification. I also ordered up the Accel Racing coil packs for it as well, they will show up tomorrow. Probably going to order up a Flexalite Electric fan set up for it this week as well.

After all this, there won't be any aftermarket mods I can buy for the 2.5...unless of course I get totally stupid and build the motor, lol. That won't be happening. Already spent enough money on this truck.

I do have a question though, how in the world are you guys getting the mpg that you are claiming? Do you all drive at 55mph on the freeway only putting it in neutral downhill??? I drive at a moderate 70-75 on the freeway, and the best I can get is say 23-23.5 from my 2.5 liter.

Fx4wannabe01
11-11-2009, 07:00 PM
are you an x-cab? are you an auto? what's your rpms in 5th at 70? all variables. more variables: vehicular maint. you over 60k? Have you replaced the PCV valve yet?

My little brother sees what you get in the city....and he sees upwards of 30+ on the freeway out of his 2.5 in his 01 reg cab 5spd manual.

twinjetguy
11-11-2009, 07:05 PM
I have a Mazda B2500 Extra Cab 5 speed manual. As far as maintenance goes, I stay on top of everything...EXCEPT I haven't changed the PCV valve. I was looking for one the other day but they didn't have any in stock. I change the oil religiously with Castrol High Mileage every 3000 and am using a K&N oil filter. Changed the plugs (all damn 8 of them) within the last 30,000 miles. Swapped out the tranny fluid probably about 30,000 ago as well. My truck has 107,000 on it and runs like a top.

Could the PCV valve be what is screwing it up for me????

zbinck2.3
11-11-2009, 07:48 PM
I get about 30mpg and but i shift my truck at 2500 every time but, i put a new pcv valve on my truck about 5000 miles ago and i dont think its ever been changed and after 110,000 miles it still wasnt clogged or anything, but i dont think that would cause you to get poor mpg

ObsoleteE
01-31-2010, 05:50 PM
I just drove my B2500 2000 miles. Its a 99 reg cab 5 speed. I had 300 lbs of sand in the back, 2 people in the cab, and about 200 lbs of gear. We averaged 70mph and all I could get out of the truck was 18mpg. I know the truck was just tuned up, but I don't know exactly what was done.

Fx4wannabe01
01-31-2010, 07:16 PM
I get about 30mpg and but i shift my truck at 2500 every time but, i put a new pcv valve on my truck about 5000 miles ago and i dont think its ever been changed and after 110,000 miles it still wasnt clogged or anything, but i dont think that would cause you to get poor mpg

You've got a 2.3L DOHC Duratec. PCV valves are of no issue on those....just the 2.3L and 2.5L Lima engines.

Ford reccommends 30,000k intervals on the Lima engine PCV's.