T REX
3/7/2008 3:17:20 AM
I would like to know that if you "upgrade" your H3 I-5 with all the mods discussed on this forum i.e performance Exhaust's,PCM Foreless,CAI etc to get better performance out of your H3 will this not have a negitive impact once the Vehicle begins to get older?
Basically would these mods make the H3 Less reliable in the long term?
Doc Olds
3/7/2008 5:26:41 AM
Those three you mentioned....The "BIG three" if you will

, should not impact reliability or longevity. This assumes all proper maintenance is performed at the reocommended intervals, and that you are driving "normally".
By normally, I mean some few people will do the Big 3, and then constantly have their foot in the gas essentially beating on their vehicle long term. That's not to say you can't or shouldn't let her rip once in a while, pass a camper towing a boat uphill, or go off roading.
Look at it this way, your engine can run at idle all the way thru 70% power indefinitely. It doesn't know the difference.

When you start tapping WOT over and over, you are stressing the motor. Manufacturers have rev limiters and other built in protection devices that will prevent engine damage when passed 70% throttle, but they are not completely idiot proof. The Big 3 will give you more efficiency (when driven normally they can increase fuel efficiency), and help to develop tourque and power in the usable power range, and they also give you a gain at WOT. Drive NORMALLY and no worries mate. See what I mean?
alrock
3/7/2008 5:56:22 AM
Doc, I have no idea what you are talking about.
alrock
3/7/2008 6:08:07 AM
Doc, I thought I'd take off my rev limiter and throw in at least three stages of nitrous. That's not gonna hurt the long term reliability, is it?
And yes, I agree. All those people that you hear getting 200k+ miles off an engine aren't the racers. They simply respected the vehicle in driving and maintenance.
cbetts
3/7/2008 7:18:19 AM
As stated earlier . . . no additional harm should come to your vehicle as long as you drive it normally and maintain it. I have a 96 Chevy S-10 that I have done pretty much all the same stuff (Magnaflow exhaust, Computer upgrade, K&N intake, B&M shift kit) and it is still running strong at 136,000 miles.
Actually, I tend drive my cars hard, so I am convinced that regular maintenance will prevent most problems.
RyanCodyH3
3/7/2008 1:19:48 PM
quote:
ORIGINAL: alrock
Doc, I thought I'd take off my rev limiter and throw in at least three stages of nitrous. That's not gonna hurt the long term reliability, is it?
And yes, I agree. All those people that you hear getting 200k+ miles off an engine aren't the racers. They simply respected the vehicle in driving and maintenance.
Throw in a supercharger, great for long lasting engines! [/sarcasm]
3hummers
3/7/2008 1:24:09 PM
Regular maintenance should be your mantra. Do that and your car will last longer than you will want it. As everyone else has said, the mods should not effect the long term life of the truck.
rhill20
3/7/2008 1:37:30 PM
Just agreeing with everyone else on here. Mods shouldn't hurt anything, people have been doing them for years. The only question is can we expect our I5 to last. It is a relatively new motor so nobody has really had one that long. I personally think that it will be fine, but I'm not a mechanic. BLUF: I wouldn't nor would most on here be doing any of these mods with the mindset that we are killing our H3's. I personally don't have that kind of money to throw away just because I think a certain muffler sounds cool. Know what I mean?
shortbus
3/7/2008 2:30:56 PM
i think the mods here have held up remarkably well. the jury is still out on the 3 new ones, but so far they've held up fine. at least one of them already has lots of miles on him ( i won't mention 3hummers by name though, that would be wrong . . . )
HummBob
3/8/2008 12:15:28 AM
Muddydawg75
3/8/2008 7:31:27 AM
I don't think you should waste your money on any of those mods.... just get the magnets and drive away happy...
rhill20
3/8/2008 10:46:35 AM
quote:
ORIGINAL: Muddydawg75
I don't think you should waste your money on any of those mods.... just get the magnets and drive away happy...
Nah, I tried that; doesn't work . The only thing that's good for is draining you bank account.


BTW, if anyone is interested in trying, I think I still have the magnets somewhere. I can sell them to you for $30. Have to pay the extra $5 for the experience they have

J/K
Muddydawg75
3/8/2008 12:05:35 PM
Just as long as everyone knows I was kidding...
modify whatever you want... but if you abuse it and forget what preventive maintenance is you will pay...