ITB's on a D series

D15, D16, D17 and Mini-Me swaps
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By suspendedHatch
- Sun Apr 20, 2008 7:50 pm #51716 flyinryan122 we might have to meet up cuz you're the only person I've seen from Utah and I just moved here.

I doubt those foam filters do much of anything. What is the spec in microns on them?

It's my opinion that you do it right or not at all.

Custom made plenum is the way to go for a daily driver. You'd have the added benefit of drawing cooler air from outside of the engine bay.

Its funny that you mention using the 20V 4AGE throttle bodies because that's exactly what happened to the ones that were on my engine. Gave them to a buddy for his B16 and later he sold them so they're probably still circulating around somewhere.

Get a standalone and do a TPS based calibration. If you wanted to retain a speed density system, you'd have to find a spot for the IAT, and then tap vacuum lines from each of the throttle bodies between the throttle plate and the head to a vacuum tube of at least 1 inch in diameter. And then you can feed all your vacuum lines off of that, ie fuel pressure, brake booster, map, etc.
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By Pinguim
- Wed May 07, 2008 1:19 am #54096 suspendedHatch, what´s your opinion about the ITB setup in a d16 that´s daily driven? Since i´m broke, do you know any way for a cheap setup? I´ve posted that Jap Street Bikes could provide the itb´s but no one has given me a clue if it´s possible to do the swap...any help?
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By flyinryan122
- Wed May 07, 2008 2:09 am #54101 Daily driven itb's=pain in the butt. throttle response is a little too good for daily driving. the smallest bumps will make the throttle jerk open and closed, making your car jump around.

We used a set of throttle bodies off of a honda motor cycle with fuel injection, we chopped a d15 intake manifold up to make a flange for the throttle bodies to bolt up too. the TPS wires are mixed up, so you'll have to reverse them. do you have experience with tuning? cause itb's require ALOT of tuning and playing around. total after everything was like 150-200 tops.
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By suspendedHatch
- Wed May 07, 2008 6:17 am #54131 I'm in West Valley.

Cheap? No... Ideal setup for ITB's is alpha-N. TPS based maps requiring a standalone and a good tuner. But this isn't friendly for a daily driver. So what you want to do on a DD is mimic the Toyota 20V 4AGE. That means build a plenum around the ITB's (just a sealed box, sheet metal or plastic) with an intake tube and a filter just like a CAI.

That's not the end of it though. Honda uses a speed density aka MAP/IAT setup. But you wont be using a Honda ECU with ITB's anyway. So why not just convert to MAF? The 4AGE is MAF. There are lots of aftermarket MAF's available. That's the easiest way. Cuz if you want to use a MAP sensor you will have to tap a vacuum port off of each tb between the throttle plate and the head. These each need to flow into a vacuum accumulator which is a sealed tube of about 1.5 inches in diameter and 7 inches long. This is necessary to balance the vacuum pulses you get from ITB's.

See, the deal is you need vacuum anyway for your brake booster, fpr etc. So you might as well build your vacuum tube and tap your MAP into it. If I were to do it (already have the AEM EMS), I would use a combination of MAF and MAP.

Cheap? No way. You can do what those guys did in the video but yeah your idle is going to hunt like that too. You'll have to idle over 1000 RPM. And you wont be making the power that you should be. With ITB's, you need a standalone. As you can see the parts themselves are nothing compared to the tuning.

My philosophy is do it right or not at all.

Sounds awesome though, doesn't it? That sound made me regret giving up on my 20V 4AGE and getting into Hondas.

"DO IT RIGHT OR NOT AT ALL" suspendedhatch
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By Pinguim
- Thu May 08, 2008 6:43 am #54313
suspendedHatch wrote:
My philosophy is do it right or not at all.



Man, i think i´ll go for a CAI instead...much more CHEAPER, and a lot EASIER to assemble. Thanks Alot for the tutoring ;)

Now wich brand is the Sh*t in D Series CAI´s or Short Rams?
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By MI_excoupe
- Thu May 08, 2008 1:27 pm #54345 I know for CAI's the AEM V2 makes good numbers .. its not the cheapest of intakes though.. im not quite sure on the cost of it. I am going to guess around like 275 USD though.
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By Pinguim
- Thu May 08, 2008 10:56 pm #54405 In Portugal a popular mod for a D-Series, is the performance panel filter, linked to an air intake in the front bumper...but i´m not sure if it brings substancial power gains...

Better start saving up! :D
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By suspendedHatch
- Fri May 09, 2008 1:04 am #54419 I agree on the V2 if you're dedicated for life for staying N/A and plan to have the car for a while. What it does to peak hp is not nearly as impressive as what it does to the entire curve.

AEM's regular CAI is a good choice, although I hate to say it cuz AEM screwed me on my warranty claim.

I'm currently running a generic ebay 2.5 inch pipe with an AEM dryflow filter. After seeing my dyno graph though, I kind of wish AEM had made an intake for my particular motor. And I'd be willing to try another AEM on the dyno. I have this huge dip in power right before VTEC, yet moving VTEC in either direction doesn't help! Someday I want to make my own custom pipe or at least try different pipes back to back on the dyno.

Injen & Comptech should be looked at.

Stay away from gimmicky intakes like the carbon fiber "whale penis" or anything with a JDM mushroom filter. The intercooler style you mentioned falls into this category.

Maybe think about compromising on a cheap intake and spending your money on a header. That's where there's a big difference between one brand and another.

I am by no means the end-all of internet opinions though! I consider myself well-informed, but that doesn't mean I haven't been proven wrong from time to time. Trust your own dyno results.
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By LowTEC-Derbo
- Mon May 12, 2008 7:42 pm #54919
suspendedHatch wrote:I'm in West Valley.

Cheap? No... Ideal setup for ITB's is alpha-N. TPS based maps requiring a standalone and a good tuner. But this isn't friendly for a daily driver. So what you want to do on a DD is mimic the Toyota 20V 4AGE. That means build a plenum around the ITB's (just a sealed box, sheet metal or plastic) with an intake tube and a filter just like a CAI.

That's not the end of it though. Honda uses a speed density aka MAP/IAT setup. But you wont be using a Honda ECU with ITB's anyway. So why not just convert to MAF? The 4AGE is MAF. There are lots of aftermarket MAF's available. That's the easiest way. Cuz if you want to use a MAP sensor you will have to tap a vacuum port off of each tb between the throttle plate and the head. These each need to flow into a vacuum accumulator which is a sealed tube of about 1.5 inches in diameter and 7 inches long. This is necessary to balance the vacuum pulses you get from ITB's.

See, the deal is you need vacuum anyway for your brake booster, fpr etc. So you might as well build your vacuum tube and tap your MAP into it. If I were to do it (already have the AEM EMS), I would use a combination of MAF and MAP.

Cheap? No way. You can do what those guys did in the video but yeah your idle is going to hunt like that too. You'll have to idle over 1000 RPM. And you wont be making the power that you should be. With ITB's, you need a standalone. As you can see the parts themselves are nothing compared to the tuning.

My philosophy is do it right or not at all.

Sounds awesome though, doesn't it? That sound made me regret giving up on my 20V 4AGE and getting into Hondas.

"DO IT RIGHT OR NOT AT ALL" suspendedhatch



im seriously debating an ITB setup for my turbo car. A custom plenum manifold would be great. Do you know if crome would be able to work with ITB? or definitely required for standalone.
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By Bouli
- Mon May 12, 2008 8:15 pm #54922 Some Dude here in Holland is making his own ITB set-up

He uses GSXR-TB and custom runners

Image

Image

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By flyinryan122
- Tue May 13, 2008 6:44 am #54972
LowTEC-Derbo wrote:
suspendedHatch wrote:I'm in West Valley.

Cheap? No... Ideal setup for ITB's is alpha-N. TPS based maps requiring a standalone and a good tuner. But this isn't friendly for a daily driver. So what you want to do on a DD is mimic the Toyota 20V 4AGE. That means build a plenum around the ITB's (just a sealed box, sheet metal or plastic) with an intake tube and a filter just like a CAI.

That's not the end of it though. Honda uses a speed density aka MAP/IAT setup. But you wont be using a Honda ECU with ITB's anyway. So why not just convert to MAF? The 4AGE is MAF. There are lots of aftermarket MAF's available. That's the easiest way. Cuz if you want to use a MAP sensor you will have to tap a vacuum port off of each tb between the throttle plate and the head. These each need to flow into a vacuum accumulator which is a sealed tube of about 1.5 inches in diameter and 7 inches long. This is necessary to balance the vacuum pulses you get from ITB's.

See, the deal is you need vacuum anyway for your brake booster, fpr etc. So you might as well build your vacuum tube and tap your MAP into it. If I were to do it (already have the AEM EMS), I would use a combination of MAF and MAP.

Cheap? No way. You can do what those guys did in the video but yeah your idle is going to hunt like that too. You'll have to idle over 1000 RPM. And you wont be making the power that you should be. With ITB's, you need a standalone. As you can see the parts themselves are nothing compared to the tuning.

My philosophy is do it right or not at all.

Sounds awesome though, doesn't it? That sound made me regret giving up on my 20V 4AGE and getting into Hondas.

"DO IT RIGHT OR NOT AT ALL" suspendedhatch



im seriously debating an ITB setup for my turbo car. A custom plenum manifold would be great. Do you know if crome would be able to work with ITB? or definitely required for standalone.


We used crome (free basic version) on our set up. worked fine.
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By KIL390GP
- Tue May 13, 2008 9:31 am #54988 The JDM power chamber/whale penis works well and especialy with vtec.
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