911 S Throttle Body Installed
 

Hey Guys

I keep an eye on this and Pedro's board and have been reading the posts here regarding larger throttle body installs.

I've installed one on my 2004S SE. Bought off Pedro.

I Dyno'ed the car before and off to have it re-dyno'ed later this week.

If you guys have any questions I can answer, fire away.

Blairhttp://986forum.com/forums/uploads01...1350481787.jpg

Great! Can you snap a picture that includes the airbox? I assume that the is a 987 box in there

Needs a leaf blower in there as well. :p

Needs a jet wash in there more like !!! Dirt was everywhere !!! I'd just got back from a contract in Arkansas, the job site was a 1/2 mile down a dirt road.

Yes it's the 987 air box.

I'll make a note to grab a pic of the air box.

Pedro's instructions were for the standard air box. It did take a lot of head scratching and a trip to Home Depot to make it work, because of the difference.

http://986forum.com/forums/uploads01...1350485176.jpg

Best pic on hand. Shows gap I was stuck with.

so what is the setup you got from Pedro?
did you get TB only, or the technotorque plenum as well?

I got the TB the plenum and the chip flash. Basically the whole thing.

Sounds great! I have a BMC air filter and fabspeed cat-back pipes too. Also have Pedro's engine mount in. They were all on the car prior to throttle body and made a little sound difference. Car sound when you put your foot down is deeper and louder, less jap bike. No drone at all though.

I had 270hp with those mods so I'm expecting something in the 290hp range when I go to the dyno Thurs/Fri. Butt dyno says 20-30hp. Fingers crossed. I also put the BBI under-drive pulley on at the same time as the TB.

Car has 55,000 miles.

So base 264hp (no Dyno verification)

Dyno with Cat-back exhaust, BMC, Pedro's engine mount and Technotorque2 270hp

TB etc and under-drive pulley ????

So my first Dyno didn't tell me much as I never thought of doing a base line run. Hp base, could have been lower or lack of chipping the car wasn't taking advantage of the initial mods.

Now however it should show what increase the TB & UD pulley with chipping makes.

oh...I also have driven 2400 miles since installation. No CEL's etc.

On Pedro's advice I also removed the "air Pump" for Cal emissions and the "chip" Pedro did was for RoW spec car.

Pedro was great help through out the install process. With my different 987 air box I nearly threw in the towel and sent it back! lol

But after many hours and phone calls with Pedro we got there.

this is unbelievable.
its like you almost fell out of the sky for me. :D
i have a Cayman S TB and plenum seating in my garage for couple of weeks now.
did not installed it because i'm thinking about getting the technopower 2 kit (for a while now)
problem is, i need to complete my custom exhaust mod, and install some headers, before going with the ECU remap. (plan is going catless.)
just this morning, i was thinking about giving Pedro a call, and drop by to pick up a technotorque plenum, that will fit the TB i have.
plan is, to install the technotorque plenum and the TB now, and flush the ECU later on, after installing the headers and modified exhaust.
headers will go on in couple of months, after completing my "winter project".
clutch,IMS,RMS,AOS,UDP and coolant tank.
its still too hot in my garage, so ill have to wait for the temperature to drop a little.:D
ill wait on your dyno results, and probably pay Pedro a visit next week.
thanks, and keep us posted.

I will let you know how the Dyno goes. I'll post the results. The guy has all my dyno runs on his comp.
If you need any info on how the install went be glad to chat with you.

I just called the Dyno guy (only one in Atlanta!) and got his answering machine, hope he's not away!

I'm real happy with it, well worth the hours of sweat!

Is that AOS going to be the standard one or the racing one ?

I have one in the garage I've never got around to fitting. Be nice to see how much trouble that thing is to change out.

cool.
sometimes it is more impotent that the "butt dyno" is happy:D

No. i'm going with the "regular one".
should be much more easy to do when the trans is out of the way (same with the coolant tank), that's why i'm thinking of doing it all in the same time.
the UDP ,headers and exhoust, will go on only after the first part of the project will be completed.
the UDP, because i would like to have the engine at perfect TDC using the OEM pulley.
headers and exhaust, just to make sure every thing works fine and quiet, after the IMSB is installed.

just came to my mined, that i'm going to be in Atlanta next week.
wan to meet for a beer?

Great I want to know how the air box fits in the 986 engine bay specifically
at the left rear corner where there is a muffler chamber adjacent to the 90 degree bend in the airbox outlet ....it is a mystery to us

Apparently the wall tightens up in the 986. Just looking at your engine bay opening I am noticing sheet metal hem differences. The more engine bay pictures the better.....after the shampoo!

If you are able to spot part numbers of the airbox and MAF housing that would be great too

Meir

Sure, should be here.

email me blair206@hotmail.com

Jaykay

I'll go take it apart and get some smart phone snaps.

Give me 30 mins!

Ohhh don't take your intake apart that may end up causing grief!!!!

Thanks in advance for the pics!

http://986forum.com/forums/uploads01...1350497787.jpg


Looks like that filter could use a clean! Which sucks because it was bear to get that thing in there!!! lol

Can't see any part numbers!

http://986forum.com/forums/uploads01...1350498357.jpg


Jaykay, the bolt in the top of the picture secures the box to the fire wall.

Dyno booked for tomorrow morning.

Hey I'm wiping down my engine now, feeling embarrassed !!!!

Can I put a hose pipe in there ? Never washed it before.

yes you can wash it.
just don't use high pressure with the hose.
once you done, take her for a spin and get the engine to operating temperature.
that will dry her out. :dance:

Thanks.....I was talking about the other end of the box, inside of the engine bay near the MAF housing

Clean again :)

http://986forum.com/forums/uploads01...1350503244.jpg

man you are fast.
and that's while replying my emails :eek:
see you Sunday mate. :cheers:

@blair,

Good job on the install. I am right there with ya. But have to ask….isn't the intake tube "collapsed" a little coming from the Throttle Body? It looks "flattened out" in the pic, is that right?

I also gleened some information, thanks @sparker, that may help with airflow over the MAF…that is using a "honeycomb" to straighten out the airflow. In most cars the intake does not twist and turn quite as much. This "honeycomb" filter is like a bunch of little straws that force turbulent air down the "straight and narrow". This results in more dense airflow throughout the width of the intake.

Here is a thread about how it works (it is for V-8 guys - so don't get your Box panties in a wad).

100mm Maf kickin my Butt!!! - HP Tuners Bulletin Board

Another member used this when increasing the size of the intake tubing to 4". Anyone else used this?

http://986forum.com/forums/uploads01...1350585993.jpg


Blue line today

Red Baseline ?

I have a dyno from earlier @ 225. With age I can't quite remember the time line but I think 225 was with 91 octane fuel and 229 was with 93. Both with the chip from "Powerchip".
Never did a baseline before that, which was sad because I don't think the chip did much. Any how it did give me a base line for future mods.

Since last Dyno I did the following :

Pedro's engine mount (mine was toast)

BMC Air Fliter

Fabspeed Cat-Backs

Pedro's Throttle Body and Chip.

BBI under drive pulley

Giving me a gain of 11.7 hp at the wheels, about 14 hp at the crank.

Today in Atlanta it was 66 degrees and 93% humidity. I did the dyno last year around this time, but can't remember the weather. One more thing I just drove back from Texas and don't remember what Octane I used at every stop! I was at a 1/4 tank when I filled up at BP with 93 before dyno.
So did the original chip work ? Did I have some 91 octane in the tank ? 93% humidity ??? Weather last year ?
Lots of variables to say the least. I think I'll will go back after another tank of gas, on a 50% humidity day and cross out that those varibles, just for piece of mind. Either way I'm up to 284hp (15% loss = 241hp) and a nice flat power band. The Dyno guy was impressed, he had a 2001 S in 215 hp !!

[QUOTE=Homeboy981;309696]@blair,

Good job on the install. I am right there with ya. But have to ask….isn't the intake tube "collapsed" a little coming from the Throttle Body? It looks "flattened out" in the pic, is that right?


It could be better and I'll take suggesttions but there is so little room to make a 90' turn coming out of the TB before you hit the rim of the engine bay. There was a small tab on that rim...I ground it off...needed that 1/2' !!

TB won't rotate any lower to miss the rim. So yes a little restricted.

thanks for the update Blair.
a little bit disappointment that the numbers are so much apart then what is posted on the Pedro website. (+30HP)
with that said, he dose recommend a use of high performance exhaust system for best results.
i think ill give it a try anyway.
the plan as i mentioned earlier, is to go catless.
i think i will run a dyno as it is today (TS bypass pipe and de shnork)
and once again after installing:
the full thechnopwoer2 kit
UDP
headers
modified exhaust.
if ill get +20, its worth it.

The way I read this is he's got 26+WHP from stock (which is well over 30BHP from the stock 250BHP). The Fabspeed might help a bit by deleting the secondary cats, but I doubt the muffler has any bearing on performance. This actually appears to be a worthwhile mod. Not cheap, but if $1500 gets close to a 26WHP gain without altering drivability or emissions...then it's not horrible either. A 986 with 280ish on tap is going to feel very lively indeed. That about 10lbs per hp as opposed to over 11lbs per hp for stock.

It's a 550 anniversary....so he started with the factory quoted number of about 260 or so

[QUOTE=blair206;309732] @Blair, Good post! Good info…and a bit of a reality check for me since I thought we would GAIN more HP from those mods. Again, that is Mfr. promises vs. ACTUAL WHP. I understand.

Seems to me if the airflow is straightened out a bit it may help. Have you tried a 45 degree up to that TB? You ARE USING a 4" (or 102mm) tubing, right? It seems you may get more clearance by going across instead of over. Just an opinion - it may not work. That is where I am with that. Also, the honeycomb mod is SUPPOSED to straighten airflow which would allow the MAF better calculations. It is not a "sawtooth" looking linear chart and more straight line (see thread below for more clarification - it's long but enlightening).

Also, are you using the ENTIRE 3" x 5" area (where the snork used to be) as the "intake pipe" or it that air being further reduced?

Keep up the good posts, very educational!

12 hp gain at the wheels. realise that 5 of that is UDP, which means 7 hp from cat back, tb/plenum, tune. that's a lot of lettuce for 7 hp.

I think after market headers with sports cats would up the number. I've steered clear of those because of cost and drone.

Also my gain is 20/13 hp. If we believe we lose 15% power from crank to wheels.

Stock was 264 hp at the crank = 224 hp at the wheels.
Moded is 284 hp at the crank = 241 hp at the wheels.

Don't forget the car does have 55,000 miles on it to. I don't it would still be putting out 264 hp on 93% humidity day.

The car is noticably faster and sounds great. I don't regret doing the mods, most I did myself and had fun doing them. But I am thinking of getting new headers now !! lol

Nice write up, thank you.




/