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 Early production USDM 97 ITR has higher REV limiter???
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32
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196 posts [100%]
Northern Nj
10-3-2013
  Early production USDM 97 ITR has higher REV limiter???« » Reply  Edit


I have heard and read that the first few type R's that were let into the U.S. had 9k or so rev limiter/ fuel cut off from the factory. Can anyone confirm or deny this ? Not sure if this Hype R folklore or not... Thanks for the input
(The other Ryan)




Rboosted717
Integra Fanaticus

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594 posts [100%]
CA
7-24-2011
 « Re: Early production USDM 97 ITR has higher REV limiter??? (32)« » Reply  Edit


Not true. I've seen several dozen '97 ITR's on the dyno (back in '97 and '98) and they're identical to '98+ ITR's (both power and redline wise). The only difference power wise is if you have A/C (optional for '97-'98) and/or if you have the '00-'01 camshaft. So much silly '97 hype. Ugh...
1998 ITR #108 "The Edmunds.com Collector Car"
1998 ITR #717 "For Drag Racing/Time Attack"
1998 ITR #731 "Retired Spa Francorchamps 24hr #38 - Hein/Green/Blackman & SPEED World Challenge Touring/Endurance Car #31"
1999 GSR "The Daily Driver/ITR Clone"
2010 BMW X5M "The Other Daily Driver & Race Car Tow Truck"
2008 CLK63 Black Series "For laughs and fun times"
http://www.lawrencebuilt.com


Todd00


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337 posts [100%]
11-22-2002
 « Re: Early production USDM 97 ITR has higher REV limiter??? (32)« » Reply  Edit


Quote, originally posted by 32 »
I have heard and read that the first few type R's that were let into the U.S. had 9k or so rev limiter/ fuel cut off from the factory. Can anyone confirm or deny this ? Not sure if this Hype R folklore or not... Thanks for the input
(The other Ryan)

I've been around ITRs and on the forums since that car hit the US shores and I've never heard that rumor...not one time.

If you'd have said something about the exhaust manifold on the 97's that landed, we have heard that one. But the fuel cut is a new one to me.


cheezthis




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3133 posts [5000%]
Chicago IL
11-11-2002
 « « » Reply  Edit


I know of this rumor. I won't share sources, but those original ECUs were changed to the lower rev limit before they were sold. Of course, some may have slipped through.

So...the answer yes and no.


http://www.itrexpo.com

Rboosted717
Integra Fanaticus

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594 posts [100%]
CA
7-24-2011
 « Re: (cheezthis)« » Reply  Edit


I don't know about this one. It doesn't make sense. The stock cams don't make power after 8400, in fact, the power starts to fall off after 8000. Raising the rev limit on a stock engine is haphazard, especially without some minor adjustments to the valve train. Even with doing that, and optimizing the timing and fuel values, you still will only see a 3-5whp gain at most. I just don't see why Honda would bother.

Also I just looked through my old dyno files (over 200 ITR's were dyno'd by Dynospot Racing, a few dozen of which were 97's) and I don't see any going above 8400rpms. A few did hit 8600rpms but that's mostly sudden clutch slip when disengaging the clutch at red line (typically indicated with a little hp spike).

The only rumor I can confirm is the better (intricate) hand porting on the early '97 and some 98 ITR's. However, and it's a big however, it doesn't make any more power (probably why Honda reduced the amount of porting work).

#snopes


1998 ITR #108 "The Edmunds.com Collector Car"
1998 ITR #717 "For Drag Racing/Time Attack"
1998 ITR #731 "Retired Spa Francorchamps 24hr #38 - Hein/Green/Blackman & SPEED World Challenge Touring/Endurance Car #31"
1999 GSR "The Daily Driver/ITR Clone"
2010 BMW X5M "The Other Daily Driver & Race Car Tow Truck"
2008 CLK63 Black Series "For laughs and fun times"
http://www.lawrencebuilt.com


Xian
Suffers from Chronic Car ADD

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1773 posts [100%]
Fl
1-3-2012
 « Re: (Rboosted717)« » Reply  Edit


I don't recall my 97 having an unusually high redline. ~8400-8500 sounds about right based on memory and the stock tach. I ran a CompTech ECU for a little while that did have a higher redline in the ~9k range. With intake/header/exhaust, it would pull "ok" to fuel cut but it was faster shifting at ~8500 vs. winding the engine out. The big reason I ran the ECU was for a couple more MPH in 2nd gear when autocrossing.
Christian
Rotating inventory of stuff...
FASTtech Limited- DL1, Schroth, & Recaro Goodness
LTB Motorsports- The Cheapest Place for Momo
TrackSpeed Motorsports- OMP, Racetech, & Driver Gear


cheezthis




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3133 posts [5000%]
Chicago IL
11-11-2002
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These were the cars that sat at the port for an extended period of time and was tied to the exhaust manifold change issue.
Some snuck through -- simple as that. My sources are pretty solid on this.
Finding one might be extremely difficult, but I'm pretty sure I know of one.
http://www.itrexpo.com

Todd00


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337 posts [100%]
11-22-2002
 « Re: (cheezthis)« » Reply  Edit


I could accept that some early cars with the exhaust manifold came over with the JDM fuel cut as well, but I'd imagine that when the manifold was changed the ECU would be changed as well.

However, I could see Honda giving the old ECUs to a few race teams, or leaving the cars as-is if sold to said teams.

Not sure I see any 97's making it to the dealership though and being sold as new. Is this what you are suggesting?


RTW DC2R
Bump drafting j00



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2199 posts [100%]
NYC
10-20-2002
 « Re: Early production USDM 97 ITR has higher REV limiter??? (32)« » Reply  Edit


Quote, originally posted by 32 »
(The other Ryan)

You gotta be more specific, there are like 10 of us

Im gonna go do a burnout and see how high my car will rev. Ill report back.


98-0034 - Track Daze y0
00-XXXX - The OG NOPI Fish Tank Type R - SOLD

My For Sale thread ITR and Misc Parts For Sale


Rboosted717
Integra Fanaticus

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594 posts [100%]
CA
7-24-2011
 « Re: Early production USDM 97 ITR has higher REV limiter???« » Reply  Edit


I've seen some low numbered '97 (badge numbers in the first 10, 20's and 30's) and none showed a higher rev limit on the dyno. Perhaps people are mistaking what the tachometer is showing. I've personally seen some ITR's that will display 9k on the tachometer before cutting out, however, on the dyno it still shows 8400rpms. I guess is doesn't matter either way though.

<<waiting for some '97 for sale posts by people claiming to have a "rare" higher rev limit '97 ITR and asking a huge premium. lol


1998 ITR #108 "The Edmunds.com Collector Car"
1998 ITR #717 "For Drag Racing/Time Attack"
1998 ITR #731 "Retired Spa Francorchamps 24hr #38 - Hein/Green/Blackman & SPEED World Challenge Touring/Endurance Car #31"
1999 GSR "The Daily Driver/ITR Clone"
2010 BMW X5M "The Other Daily Driver & Race Car Tow Truck"
2008 CLK63 Black Series "For laughs and fun times"
http://www.lawrencebuilt.com


cheezthis




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3133 posts [5000%]
Chicago IL
11-11-2002
 « Re: Early production USDM 97 ITR has higher REV limiter??? (Rboosted717)« » Reply  Edit


Quote, originally posted by Rboosted717 »
I've seen some low numbered '97 (badge numbers in the first 10, 20's and 30's) and none showed a higher rev limit on the dyno. Perhaps people are mistaking what the tachometer is showing. I've personally seen some ITR's that will display 9k on the tachometer before cutting out, however, on the dyno it still shows 8400rpms. I guess is doesn't matter either way though.

<<waiting for some '97 for sale posts by people claiming to have a "rare" higher rev limit '97 ITR and asking a huge premium. lol


That last part, yep, totally.

The one that I know of was a double digit badge. And yeah, tachometer reading can also confuse many people. They aren't the most accurate.

My sources are internal, and I did not find out about until a few years ago. It was definitely a quiet thing.


http://www.itrexpo.com

Todd00


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337 posts [100%]
11-22-2002
 « Re: Early production USDM 97 ITR has higher REV limiter??? (cheezthis)« » Reply  Edit


Quote, originally posted by cheezthis »

That last part, yep, totally.

The one that I know of was a double digit badge. And yeah, tachometer reading can also confuse many people. They aren't the most accurate.

My sources are internal, and I did not find out about until a few years ago. It was definitely a quiet thing.

Right but...was this car bought this way at the dealership or did the ECU find its way in via another channel (someone knew someone who had them, etc).


coolhandluke
Break on...



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13068 posts [100%]
HI
12-12-2005
 « Re: Early production USDM 97 ITR has higher REV limiter??? (Todd00)« » Reply  Edit


Quote, originally posted by Todd00 »

Right but...was this car bought this way at the dealership or did the ECU find its way in via another channel (someone knew someone who had them, etc).

A 97 that "slipped" through would have been sent to a dealership via standard protocol.

Quote, originally posted by RTW DC2R »

You gotta be more specific, there are like 10 of us

Team Ryan!
(can't find the photo)


98-1040
98-0197 - Sold
01-0187 - Sold
97' #171

ITR Expo 16 Event Photo Thread


Dkbmxer-88
Geaux TigeRs!



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1666 posts [100%]
Bastrop La
11-15-2011
 « Re: (cheezthis)« » Reply  Edit


Jay is correct.
NBP ITR #01-fu thieves
CW ITR #98-0604 sold
PY ITR #01-xxxx sold
CW ITR #98-0352 sold
FBP ITR #00-0744 R.I.P
08 f150/ daily driver

Dc2-ProductionS
~ITR Hoarder~



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246 posts [100%]
Poughkeepsie NY
4-1-2014
 « « » Reply  Edit


I have the original ECU for 97-0012....

I'll have to check this out once shes back on some rollers.


'97-0012 - CW - The Pit
'01-0590 - PY - The Queen
'01-1058 - NHBP - The Daily


 

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