Deckplate mod. Pros and Cons

I say no to the deck plate but 1000% yes to cutting off the 90 inside the fender.

I am against the deck plate because it looks like a hack job and the guy you try to sell your truck to one day, may walk away or offer you much less because "its been hacked up on" and he will assume everything else has been jerry rigged on the truck too.

it doesn't matter what you say to them or explain about it, that's the appearance it gives.

absolutely you wont be sorry you did it.

if you still aren't sure then take the 90 off and put it in the garage and drive it like that for a week and see, then put it back or cut it and put it back on depending on what you decide. the idea of having it connected to the fender is to block any mud that gets splashed up under the hood from getting into it.

 

Drop in a V8, that'll satisfy your power cravings!

 

lol yeah I took a 2008 Shelby gt500 to prom last year and a 2012 Shelby gt500 to Homecoming this year, I was hoping the deckplate would bring me up to that kind of HPD

 

Ya, well I hate to break the news to you. But, you're not going to have the gains you'd like to get with a deck plate mod. If it were me, I'd save my dough for other improvements. Maybe put a nice set pf 22's with spinners (is that still fashionable?) on it.

Should've bought a bigger truck if you want that "put your head in the backseat experience".

 

lol Id rather have 15s with 37in swampers.....but I did hear that for every square inch of chrome you add it adds 1hp

 

Now that's funny!

 

The deck plate made a difference in noise and the truck felt snappier but noting worth talking about.

Where I did see a gain was in the mileage. Picked up almost 10 miles on a tank

 

No. I think, THANK FUCK!NG GOD, the big wheels fad is over, unless you drive a scraper. Don't ask. My question is what is the difference between the deck plate mod and/or just leaving the airbox flap door open? Im know it still adds the uber pointless, a$$ horse power, sucking air sound...

 

Youll net About 1/4 hp if you're lucky but an increase in noise messes with some folks butt dyno. These little engines ant capable of pulling enough air for a little restriction to do much of anything.

 

Even on the almighty v6!?

 

I have a 2004 3.4 and I think it helps me. I carry an 1100lbs slide in camper and for me the engine seems more responsive. Bill

 

totally different engine and overall results.

Open the intake up with an aftermarket kit, Toyota designed your air box to be the most efficient from the factory already.

If you start messing with higher airflow on one end only its not going to make any real difference, but will be louder.

Deckplate or full Cold air intake with headers and exhaust will, pull the battery terminals or ecu fuse to let the truck relearn the new air/fuel mixture for best results.

Do not expect huge power or mpg gains.. just noise and possibly a quicker throttle response in mid range.

 

So with the 3.4l, it's a yes, and for the 4 cylinder, a maybe? I'm honestly just hoping for a few more miles to the gallon, so I'm back and forth between the deck plate mod, and a k&n cold air intake. Any opinions? My 99 only has 123k miles, and still has plenty of power. Not sure if that matters.

 

Pretend there's an egg on your gas pedal.

Highly unlikely that mod will result in a measurable increase in anything, except maybe noise. Driving habits will do WAY more for your MPGs than any mod.

Cold air intakes are dumb. I have one. They aren't even "cold air" intakes since they get most of the air from inside the engine compartment. Those heat shields don't actually seal out the hot air.

Only "true" CAI is a snorkel.

 

If you could go from 16mpg to 19mpg just by punching a hole in your airbox, it would come from the factory with one. Toyota has spent millions on designing those parts and decades of work. 30 seconds with a harbor freight hole saw isn't going to improve things.

 

My humble opinion after doing this....sounds cool. No other noticeable changes. (I also deleted the air box baffles)

 

It is all ready a given your engine is well maintained !!


Weight remove all the extra stuff that I seem to have a major problem with It is nothing for me remove a 1000 pounds from behind my seats of extra parts tools and welding cable every few weeks.

Tires run the air pressure at the correct pressure for the tires and weight carried.

 

Mine helped with the 2rz and moving bigger than stock tires. That was before and after a whole new top end. All up to u what to do to ur truck.

There is a Dyno sheet that floats around where someone got legit higher numbers with the mod. I just plate it whenever I get to trailhead entrances and takes 5 sec. If u wanna do it, then do it. Won't hurt ya unless u submerge it uncapped

 

The Elbow Mod-the most unsung, most ignored mod in here. I did it to my 3.4 many years ago and am glad I did. I feel it's much better than the Deckplate Mod because it keeps the intake completely away from engine heat. That "air duct" in the fender not only has the 90* backward angle right off the airbox, but it also has to draw fresh air from almost back near the radio antenna area. Surely adequate, but with the Elbow Mod, I am now drawing fresh air from right up near the front bumper with no 90* restriction, and the 3" hole is still totally insulated from engine bay heat like you described. IMO this is the way it should've been stock but I guess Toyota engineered that "in-fender snorkel" in all the 1st-gens so we could ford streams and creeks, which the vast majority of us will never have to do.