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Discussion Starter #1
Club,

I have been reading a lot about IM + TB setups that produce a good power gain. In http://www.tsxclub.com/forums/1st-gen-engine/61641-tottenhams-guide-na-power.html it talks about RRC and RBC for IM's. But to effectively use this you need the ecu flashed? This would include a J35 TB like in the guide.

Also, I have read about people using the 06 (?) IM + TB in the 04 and 05 TSX's. And I assume that this would not need to be tuned?

What kind of results should I expect from each option?

Kindest Regards,
 

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probably want at least a reflash when upgrading to 06 IM/TB. You're going to want flashpro to make the most of the mods.
 

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Changing parts on a car should always involve tuning.

If your interested in a 07 IM, I have mine laying around. PM me.


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probably want at least a reflash when upgrading to 06 IM/TB. You're going to want flashpro to make the most of the mods.
I wouldnt even recommend just a reflash, when I added my manifold, TB, and CAI, I had to add 10% fuel everywhere from 3500-4200k on up. Generally 10% is one point in AF, so if the reflashes open loop is set to 12.5 or 13.5 with this change it moves to 13.5 or 14.5 respectably. For an NA car you *may* be able to get by, but IMO I wouldnt drive it like that at all.


Nice write up on how to tune your fuel trim, its for Kpro but it translates over to flashpro for the most part: http://www.pencomputing.com/rsx/adjusting_fuel.html
 

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I wouldnt even recommend just a reflash, when I added my manifold, TB, and CAI, I had to add 10% fuel everywhere from 3500-4200k on up. Generally 10% is one point in AF, so if the reflashes open loop is set to 12.5 or 13.5 with this change it moves to 13.5 or 14.5 respectably. For an NA car you *may* be able to get by, but IMO I wouldnt drive it like that at all.


Nice write up on how to tune, its for Kpro but it translates over to flashpro for the most part: Adjusting fuel with the Hondata K-Pro
I was only referring to reflash using 06 throttle body (assuming IM's are the same with all the 1st gen years).
 

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I was only referring to reflash using 06 throttle body (assuming IM's are the same with all the 1st gen years).
Ahh ok, fair enough. Im not 100% sure if they are the same as Ive never looked into that. My guess is they are not because the TBs are different but I could be wrong.
 

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Discussion Starter #7
I wouldnt even recommend just a reflash, when I added my manifold, TB, and CAI, I had to add 10% fuel everywhere from 3500-4200k on up. Generally 10% is one point in AF, so if the reflashes open loop is set to 12.5 or 13.5 with this change it moves to 13.5 or 14.5 respectably. For an NA car you *may* be able to get by, but IMO I wouldnt drive it like that at all.


Nice write up on how to tune your fuel trim, its for Kpro but it translates over to flashpro for the most part: Adjusting fuel with the Hondata K-Pro
What about the RBC with the stock oem TB.. Would I need to tune it with flashpro? How bad is it to run an RBC with oem TB without a tune?

Kindest Regards,
 

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What about the RBC with the stock oem TB.. Would I need to tune it with flashpro? How bad is it to run an RBC with oem TB without a tune?

Kindest Regards,
if you don't want a tune, I think you'd want to up the TB and not the IM. going off what i've been reading so correct me if i'm wrong tottenham :naughty:
 

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If your not gonna tune what's the point?

If your not gonna tune, just do the mods that make the noises you want. Because that's all your going to create.


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Discussion Starter #11
if you don't want a tune, I think you'd want to up the TB and not the IM. going off what i've been reading so correct me if i'm wrong tottenham :naughty:
Thank you for your response. Do you suggest a TB for an 05 TSX? Also, is a TB alone even worth it?

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Get the one on Craigslist! The gaskets are cheap and need to be upgraded to either hondata or other brands. That manifold sells for ~175+ new or used.


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Get the one on Craigslist! The gaskets are cheap and need to be upgraded to either hondata or other brands. That manifold sells for ~175+ new or used.


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Did you see the link I posted about the $200 RBC? I think it comes with the gaskets and spacer, the spacer alone costs $60. (TBH im not even sure if I need the spacer..). Let me know what you think :)

Kindest Regards,
 

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I didn't use a spacer. Some say it works for little hp but I think you would be splitting hairs. The only use I could think of is something to mill to match to your TB size if your running say a ZDX (80mm iirc).




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Discussion Starter #15
I didn't use a spacer. Some say it works for little hp but I think you would be splitting hairs. The only use I could think of is something to mill to match to your TB size if your running say a ZDX (80mm iirc).




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Thank you for your responses :) I appreciate your help. I am going to try and grab the IM and use the oem TB and run it without a tune until I get a flashpro. I assume I cannot use the re-use the gasket that is on the IM right now so I will then get one of those hondata.

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Yes. But shop around. There are many companies that make them and they are all basically the same. Hondata hybrid racing p2r etc etc.

But I want to say that I do not suggest you put that manifold on without any tuning capability. Nothing good will come out of it. I don't suggest changing anything past an intake and exhaust without tuning. You don't get the full use of the product and it leaves your engine to the almost certainty that it will run lean.


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If your not gonna tune what's the point?

If your not gonna tune, just do the mods that make the noises you want. Because that's all your going to create.


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+1, dont bother touching the IM or TB if your not gonna get a flash pro, you will actually lose power.

if you don't want a tune, I think you'd want to up the TB and not the IM. going off what i've been reading so correct me if i'm wrong tottenham :naughty:
TBH I wouldnt even bother if hes not gonna get flash pro, you could probably get away with a TB and a bigger SRI or CAI. Not worth the money in parts if you cannot optimize your gains ya know :p

Can anyone confirm that this comes with gaskets and spacer?

RBC Manifolds!! - K20A.org .:. The K Series Source . Honda / Acura K20a k24a Engine Forum

I ask because someone is selling a used RBC on craigslist for 100 but doesn't come with anything.

Kindest Regards,
If you get a TB get it from autofair on k20a, tell them you are putting it in the TSX and you need the tb modified with the vac fitting installed ;)

They will supply this if you ask but you need it since we do not have an IACV, Idle is controlled by the DBW system in the tsx: 06+ Civic Si 70mm Thermal Throttle Body Gasket

Seriously though, I wouldnt bother doing this without a flashpro. Get that first, you will feel a very large difference with just a nice e-tune.

EDIT: Also just to add, keep in mind you need to do both sides of the motor if you really wanna see some nice gains. Dont forget about the exhaust and header. Keep in mind these motors dont respond to one single mod like many V8s or turbo motors do, you need to combine a handful of mods together which equate to one larger gain.
 

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Discussion Starter #18
+1, dont bother touching the IM or TB if your not gonna get a flash pro, you will actually lose power.



TBH I wouldnt even bother if hes not gonna get flash pro, you could probably get away with a TB and a bigger SRI or CAI. Not worth the money in parts if you cannot optimize your gains ya know :p



If you get a TB get it from autofair on k20a, tell them you are putting it in the TSX and you need the tb modified with the vac fitting installed ;)

They will supply this if you ask but you need it since we do not have an IACV, Idle is controlled by the DBW system in the tsx: 06+ Civic Si 70mm Thermal Throttle Body Gasket

Seriously though, I wouldnt bother doing this without a flashpro. Get that first, you will feel a very large difference with just a nice e-tune.

EDIT: Also just to add, keep in mind you need to do both sides of the motor if you really wanna see some nice gains. Dont forget about the exhaust and header. Keep in mind these motors dont respond to one single mod like many V8s or turbo motors do, you need to combine a handful of mods together which equate to one larger gain.
So I take it that the only loss of power would stem from not having required fuel amount? I say this because if not, the stock im would not create any restrictions. And with a rbc and intake, would that setup's power bottleneck with a stock header and exhaust?

Kindest Regards.

EDIT: Is this the tb you mentioned:http://afhkparts.com/shop/kswap-honda-parts/j35-throttle-body-install-package/
 

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So I take it that the only loss of power would stem from not having required fuel amount? I say this because if not, the stock im would not create any restrictions. And with a rbc and intake, would that setup's power bottleneck with a stock header and exhaust?

Kindest Regards.

EDIT: Is this the tb you mentioned:J35 throttle body install package - AFH Parts
Yes exactly, yes that is the TB.

Yes the stock header, cat, and exhaust would cause a bottle neck. You probably wont see much over 200whp without changing the header and exhaust out.
 

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Wow, what a fine coincidence... just received my J37 t/b in the post today.. I have an rbc i/m that I ported out to close to 70mm to fit the zdx t/b outlet dia. Still waiting for the p2r spacer/adapter to finalize the inlet porting/polishing. I also ported the i/m outlets to fit the thermal gasket size, and will soon be porting the inlet on the head to match.. Got some silicone tubing, 80 mm, and some alu connectors to build this beast into my car.. and then get a retune.. heres a few pix of the work so far and a comparison to the 06 tsx tb (64mm):
http://imageshack.us/a/img200/8849/nj8n.jpg
http://imageshack.us/a/img692/3951/3owy.jpg
http://imageshack.us/a/img43/8217/v5it.jpg
http://imageshack.us/a/img407/193/6tz.jpg
http://imageshack.us/a/img560/1679/l8uu.jpg
http://imageshack.us/a/img32/3277/4xj7.jpg
http://imageshack.us/a/img542/417/d4kh.jpg
http://imageshack.us/a/img823/9915/xk72.jpg
http://imageshack.us/a/img19/5134/xva5.jpg
http://imageshack.us/a/img20/2750/fus7.jpg

Acc-Man
 
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