Deckplate mod?

[Thorgan112]

Contemplating doing the deckplate mod, but here is my dilemma: Yes, I understand that by doing the deckplate mod/cutting a hole in the box, will increase the amount of air flow your intake can pull. However, by doing this mod, the air will be pulled from the inside of the engine bay instead of the wheel well. Obviously the inside of the engine bay is a wee bit hotter than the wheel well. So my question: is more air worth it when your taking in hotter air? Thoughts?

I contemplated doing the deckplate mod and shielding off the filter area from the rest of the engine bay to try and keep the air cooler.

Please feel free to correct me if my thought process is entirely wrong here

 

[shootmymime]

While driving with that much wind that goes into the radiator and engine bay, it does not make that much of a difference.

I have a cai on mine and an ultra gauge. The intake temps are only a few deg warmer then what my ambient air temp reads on my display. So does not really matter from what you will notice.


Do the deck plate mod and isr and you will be happy.

 

[Thorgan112]

Do the deck plate mod and isr and you will be happy.

Gotcha, that makes sense to me. Now my next question, seeing as how it seems as though you have done the isr and deckplate mod. I have read mixed reviews on power gains and losses. Did you lose any low end power/acceleration? I cant afford to lose any more. I have 34" tires on and have not regeared my differentials, so as you can imagine, I am begging for every little bit of engine performance I can find haha

 

[MillerPKA]

Oh man this is weird..I've started all over.

The isr mod is going to give you slight improvements guaranteed. Their sole function is to steal some of your air flow, gargle it, and spit it back out. Real awesome piece of technology there, but it's best admired on a shelf.

The deckplate is arguable. Lots of back and forth and testaments on both side. Personally having done both, the deckplate's noise was cool but the gains were minimal if any. The good thing is though if you decide you don't like it, screw it in and put it out of your mind (word to the wise, gentlemen).

 

[shootmymime]

Gotcha, that makes sense to me. Now my next question, seeing as how it seems as though you have done the isr and deckplate mod. I have read mixed reviews on power gains and losses. Did you lose any low end power/acceleration? I cant afford to lose any more. I have 34" tires on and have not regeared my differentials, so as you can imagine, I am begging for every little bit of engine performance I can find haha

No I have not done it. I have a K&N intake installed.
You will have a lot more engine noise but not much on gains. I would say do it.

 

[Thorgan112]

Oh man this is weird..I've started all over.

The isr mod is going to give you slight improvements guaranteed. Their sole function is to steal some of your air flow, gargle it, and spit it back out. Real awesome piece of technology there, but it's best admired on a shelf.

The deckplate is arguable. Lots of back and forth and testaments on both side. Personally having done both, the deckplate's noise was cool but the gains were minimal if any. The good thing is though if you decide you don't like it, screw it in and put it out of your mind (word to the wise, gentlemen).

Thanks for the advice, and yeah the deckplate mod I am not too concerned about, because, as you mentioned, I can always place the cap back in and boom! Back to normal. The isr mod I am still a bit ehhh on doing.

 

[shootmymime]

Gotcha, that makes sense to me. Now my next question, seeing as how it seems as though you have done the isr and deckplate mod. I have read mixed reviews on power gains and losses. Did you lose any low end power/acceleration? I cant afford to lose any more. I have 34" tires on and have not regeared my differentials, so as you can imagine, I am begging for every little bit of engine performance I can find haha

No I have not done it. I have a K&N intake installed.
You will have a lot more engine noise but not much on gains. I would say do it.

 

[Dee3]

I did the deckplate mod and a piped intake on my 98 with a K&N drop in filter. Also broke the elbow loose on the fender side of the stock intake box and routed the elbow down and towards the front passenger fender well area for more airflow. I have a K&N intake on my 02. They both add a more pleasant sound IMO and maybe whatever percentage of hp I am unsure +/- either way but I like both the intake setups, some people say they are junk, others like them, I have always modified the intake somehow on I'm pretty sure all cars I've ever owned, I don't go into deep water with my intake on my stock 4runner, I can put the deckplate in my lifted runner if I want too.

 

[D Farms]

I dont know about gaining any horsepower but it sure does quicken the throttle response.

 

[Jaketino]

Do the cheap test fit ISR mod (duct tape). See how it feels, then decide to do it for real or not.

 

[TBuzz]

I did the deckplate mod after the SC and URD. It may have made a slight difference in throttle response. After reading many opinions including Texas ace. What I know for sure is that it lets a tremendous amount of debris in when off-roading. I have 3 times taken out my air filter and banged it off, replaced it once and cleaned the maf two times. I am sure it's dirty again. I'm planning to change the air filter this week, inspect/clean maf and cap the deckplate. I'm not so sure that all the people that do it actually live in dry dusty environment. Down in the humid south I suppose it would be much less a concern. Don't think it did much for me..

 

[vanion2]

My recommendation is the only guaranteed method for proving it to yourself. Take your stock setup to a dyno. Have them do a baseline run. Do the deck mod and revisit the same dyno (preferably within the same time frame) and do another run. Compare the curves and you will know pretty darn well if there are any gains from doing the mod.

My experience with CAI modifications and actual dyno runs is your gains are negligible, you trade low end torque for high end hp (how much varies by engine), you add more engine noise, and depending on the filter more often than not increase engine debris penetration. Take this with a grain of salt because I haven't done it on my 4R. Just every my cars and bike over the last 10 years.

Your best bet is a better set of 6-2-1 headers and exhaust. Costs a heck of a lot more but done right you will keep your low end power and smooth out the rest of your power curve in the process. Gains won't be much without FI but it made a world of difference on my MR2 and it is still running the stock intake. Toyota knows how to design a quality product but even they have to bow to US Federal emissions standards and a log style header is always restrictive.

Of course the deck plate mod is only going to cost you some time and whatever screen media you choose to put on the box. All you have to consider is how often do you feel like cleaning your MAF and replacing your filter?

 

[geohil]

I've been running the elbow delete, silencer delete, and deckplate mod for about 4 years now. I did mine at the same time I S/C'ed, added headers, and added the URD kit, so it is not a fair comparison. I did it at the recommendation of Gadget's website. Good reading:
Air Induction
I will say that during the mapping process I spent a fair amount of time on the dyno. There was virtually no change with or without the deckplate screwed in. There could be a good explanation to this though since there really isn't the same volume of air moving in a closed shop vs moving vehicle.

One of my future purchases will be a snorkel - not sure how that will mess with HP and Torque but it really is just a long CAI, right?