Several months ago I did the deckplate mod for my 97 4runner. I cut the hole in the air box, inserted the deck plate rim in, removed and replaced the EFI fuse as per some directions I got from another post. It seems like most everyone else on the forum have had good results with this but unless I'm imagining things, It feels like I've actually lost power and am getting worse milage as well. I always go super light on the pedal so the milage shouldnt be from a change in driving style. I tested my brakes and they're not grabbing.

I thought I saw a post once, for a way to test the power or something like that, is there a test I can do to tell if I'm imaging this? Was there something else I was supposed to do with the stock intake? Would it be worth taking the EFI fuse out and see if reseting it again in case it didn't work the first time?

Thanks for any help.

 

First pull the negative batter terminal for about 5 min to reset the ECU completely.
Second you should clean your MAF with some brake cleaner.
Third, make sure you have a clean air filter installed.

Then run a tank of gas and see where you stand on mpg.

 

seems to work good for me im getting about 21mpg

 

You're an asshole!

 

hahaha

 

i didnt notice any better gas mileage, but i do notice a little more high-end power, mainly around the 3k rpm range and up

 

I wish I got 21 mpg.

 

i wish i got 18....

i have yet to do mine, still debating on it, ive read good things, bad things, so i still cant decide.

 

I definately can hit 21+ MPG on the highway, but city or winter driving is definately less.

 

I've had my Deckplate in for about 2.5 years now!! No problems with loss of power!! But No Gains on Gas mileage, just get a little more power up in the higher RPM's and a slight better Throttle Response...

Did you use "Sensor Safe" Silicone to seal your deckplate???


I get about 17-18 MPG in the city with 305's

 

From all the money your save'n on gas!!! Means its time for a lift and tires!!

Just remember you can always reverse it, by putting the lid back on (sealed Air-Box)

 

In the summer I can get 22-23 on the highway ( 2.7 ) but in the winter it really sucks. Can't say that the deck plate mod did anything great but it sure never hurt anything.I also did the elbow mod for what it's worth, Mike

 

I get that too, and I have a Supercharger!!!

 

I don't know anything about sensor safe silicon, how is it different and why do you have to use it?

 

I did the deckplate, isr, and trueflow filter. after the reset on the ecu, my mileage sucked, but after a couple tanks of gas the ecu learned what was going on and now im getting about 22 mpg, and thats with the crappy winter gas.

mine feels like it may have lost a little power down low, but it seems to drive alot better at highway speeds.

I wish I had access to a dyno to see what is happening with my hp and torque, with and without all the mods done.

 

After 2 years I just screwed the lid back in about 3 tanks of fuel ago. First no change in gas milage, it is a lot quieter. It seems a bit torquer down low.

I never understood why you would silicone to make the deckplate ring air tight. There is a big hole on the side of the airbox anyway and the air still gets filtered.
Once the plate is screwed in, no big amounts of water and dirt will get in, silicone or not. Just my 2 pennies.

 

I think the idea behind siliconing it is so that you can reverse it and have it be exactly or as close to stock as possible. By not sealing it, the leaks present when closed partly defeat the idea of being able to reverse the process.

 

What is this sensor safe silicon? and where do I get it?

What about GOOP... I love that stuff!

 

I don't really know how I came across this thread...but the silicone is so that, one, you can reverse the deckplate back to "stock" and also in deep water crossings you can screw the lid back in and it's water tight.

Random post of the day,

Fink

 

The point of the sensor safe silicone is that you can put it on and drive it right away. if you do the mod with any old silicone you have to wait for it to completly dry before puting it back on or a warning light will come on.
you can get it at just about any auto parts store.