Oh I grasp it just fine thanks (don't recall me insulting your intelligence but whatever) but I need something more substantial than 20 degrees. Now if you had a dyno chart showing before and after and it had more than just 1 or 2 more HP then okay.
I'll start by saying that I was not intending to question your intelligence, I'm sorry if you took it that way.
I do take issue with the fact that a few posts ago, you called the mod "just because" then I post measured IAT temp readings, and you procede to try to agrue what impact the temps have on power. So, here are a few links including one dyno chart, the first link is to Hondata. Please read both paragraphs at the bottom.
http://www.hondata.com/heatshieldgasket.html
Hmm, so Honda Engineers bypassed all sources of hot coolant to the intake / TB on Type R motors. I wonder why they would do that? Hondata also gives exact IAT temperature drop to power increase numbers. I'm sure you will claim it's all the intake to head gasket that they sell, if that were true, why does Hondata bypass the IAC and TB coolant lines too as part of the install process?
http://www.ws6.com/mod-8.htm
Different motor but roughly a 10% gain. I'm not huge on the lack of information with his testing procedure, but the gains are clear as day.
So even if you are correct in your 1-2 HP numbers above, for the cost of about 50 cents, if you live in a warm / hot climate, this is a worthwhile MOD, not a "Just Because". (To most people that is, some will debate it and ignore the facts regardless of how they are presented.)
There is much more info available via google and bing, you can search just like I did. It's not up to me to convince you. You are chiming in on someone elses thread and arguing the validity of their post and mod. Why don't you provide some proof that it does nothing?
Now insulator gaskets for the manifold I can see the reason for because the last thing you want is the heat of the engine to bleed over and heat up the manifold which could lead to dangerous situations of predetonation but even then it would have to be in hard-driving situations like auto-cross.
Again, please read the Hondata paragraphs, this is NOT about predetonation or autocross, it's about colder denser air making more power.
Besides it's not what IAT's you're seeing that matter as much as the IAT's the ECU is seeing and since that is read before the TB, it can't compensate by adding more fuel.
Wrong again, I am reading the temps FROM THE ECU, which means the ECU can see the decreased temps and add more fuel if warranted based on many other parameters programmed into it. (Engine RPM, Engine load, Crank Sensor, Cam Sensor, Engine Coolant Temp Sensor, Throttle Position Sensor, the first O2 Sensor, etc.)
Tell me, have you also measured your AFR before and after? I tend to think Honda Engineers factored in the IATs from the coolant passing through the TB and programmed the ECU accordingly. It's not colder air that makes more power, it's more air AND more fuel. Colder(denser) air not expected by the MAF could be leaning out the AFR.
Ah yes the old stand by, Honda Engineers factored "That" in. I'll address this first, Honda Engineers also designed the new rings for the 9th Gen Si's, only they screwed up and the design they used for the first 7000-8000, '12 Si vehicles built, (coupes and sedans) did not seal / wipe oil properly hence the TSB for excessive oil consumption and the replacement of those rings with the Older Part number from the Acura TSX 2.4s. For that matter, there are numerous other TSB's as well depending on VIN.
How could the colder air not be expected by the MAF? The IAT is integrated into the MAF, they are being measured at the exact same location in the intake tract?
I'm done debating with someone who refuses to look beyond their own myopic opinion. You're right and everyone who has ever bypassed is wrong. So why don't you start another thread titled Coolant Bypass Mod is "Just Because" and go argue your opinion there. Since you have not posted a single fact or measurement of your own, you are just trolling this thread. If you do feel the need to continue to argue without posting evidence supporting you claims why don't you tell us your expertise / backround? I work at a company that designs Fuel systems for GM, Toyota, Mazda, BMZ, Daimler, VW, and many others. We also have one of only two full CARB certified emissions DYNOs in the area. Callaway, TRD, Roush, and many others bring their parts and vehicles to us for testing to get CARB exemptions.
Kirk
....I like how you guys end on a respectful note.
