i was going to do this, but i believe weezer told me there's no real power gain unless you are reving well past 8000rpm.
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i was going to do this, but i believe weezer told me there's no real power gain unless you are reving well past 8000rpm.
i have a book on honda tuning sitting at home which has heaps of dyno tested stuff. on the test comparing the stock b16 IM with the ITR item for use on a B16, the ITR IM only makes more power right up top but makes less power across the rest of the band, in some places by significant amounts. it seems the stock B16 IM is extremely well designed. however, a larger TB seems to produce good gains from the tests done in this book
What sivic wrote is the same news as ive also heard before. Also, i recall dynodave or ecu-man saying last year that theier were no power gains by having an ITR IM on a B16A2 engine. Why - they are not tuned together.
ITR IM = CTR IM, I have compared both of them on hand and they are the same except for the part no. so i hope this information helps :DQuote:
Originally Posted by Looneee
The choice of ur IM, will determine where the PEAK TORQUE will occur along the rpm range.
The shorter it is, the higher the PEAK TORQUE will occur along the rpm range.
You have to decide where along the rpm range that you will spending most of your time in a car. if u race a lot, you will spend time a lot of time in higher end so it will be good to have ur PEAK TORQUE in range that you will be in.
if you just drive daily and hardly go beyond 5000rpm, u will realised that u feel like the car has lost the torque...well, the torque is not lost... just shifted to a higher end where it needed most when it matters.
hope this help :thumbsup: :D
Thought so...Quote:
Originally Posted by hondar
Im not too fussed with loosing low end... as long as its not TOO much... i dont want it to turn into a GL or something... somethin with nice mid-high range
Im not into dragging so im not huge on low end ... when i want the power i will be in higher revs .. where the gains are situatied (so it seems?)
The reason I ask is because my IACV needs to be replaced, and ive found it cheaper to source an ITR IM with necesary parts (including an ITR IACV) than buyin a b16 IACV alone... I thought I may as well opt for this option since it is cheaper.. and in some cases better... ?
If the IACV had not needed replacing, i probably wouldn't even consider this.. but efficiently it seems like a better option, unless someone can hook me up with a decent b16 IACV?
So my real main question that remains is.. that will changing the IM cause a serious loss of low end? (with a i/h/e combo [4-2-1 headers]) ? in a sense that drivability will be hugely sacrificed?
He was also running ITR TB and 4-1 headers ... all designed for a 1.8 ... he experienced significant losses down low because of that..Quote:
Originally Posted by sesshoumaru
yay .. thats what i said as well :)Quote:
Originally Posted by hondar
huh?Quote:
Originally Posted by SiR JDM
what do you need any low end for drag racing?
BTW - the answer is if it is cost effective, and u r not going to dyno tune it, then just do it.
also, i gained ~10kw ATFW with ITR IM over B16A IM in a B20VTEC set-up, dunno if this helps you though...
JDM ITR 96 spec - 62mm TBQuote:
Originally Posted by Civic Type R
98 spec - 67mm TB
JDM CTR - 62mm TB
EK4 - 58 i think?
My fd who works in wreck yard show me the CTR, ITR 98 spec IM, they are not the same, CTR internal are lot smaller which is exactly the same as EK4
internal diameter and the outside diameter are not the same i think, not sure about the diameter really but you could really see the huge difference between ITR and CTR IM
ROFLMAO!Quote:
Originally Posted by spoondc2
i kinda dind't really put any thought into that comment.. so ignore it... hahaQuote:
Originally Posted by tinkerbell
ok gimme a second...
this is the 98 JDM ITR TB i have.
It clearly measures 67mm at the inlet but am i under the belief this is still officially 62mm ?
http://www.ozhonda.com/gallery/data/...ottle_body.jpg
Okies ;)
oh, and where do you guys think that the EK9 has a 62mm TB?
the ONLY B-series engines with 62mm TB's are the ITR and CTR...
and there is no ITR 67mm TB