The specs. 1997 jdm itr. 100% stock internals, unopened.
PWDJDM CF Intake
PWDJDM Thermal IM gasket
Hytech 4-2-1 Header
CTR B-pipe
Spoon N1 axleback
Carsound Cat
As far as the tuning, there is non. Just running off the 97 jdm itr ecu.

Yes, it's in an EK. Just looking for your thoughts to see if anything could be wrong. Feel free to ignore this if the non-itr shell bothers you

What worries me is:

I dynoed my car last summer (Dynojet) and it made 173hp, 128qt. Since this time, I have changed the spark plugs, done regular upkeep, and the only major change is I switch the jdm itr 4-1 header for the hytech header.

The hp gains are amazing, but is the tq supposed to be lower? I thought 118 was pretty low.

Also how does the air/fuel look? To be truthful, I didn't know anything about what air/fuel is supposed to tell you till yesterday, and from what I understand, N/A air fuel is supposed to stay between 13 and 14 which it seems to do though I guess that means it starts out a little lean. But after vtec crossover (6k rpm's on my stock ecu) air fuel seems to dive down to what looks to be rich numbers. Is that right?

All in all, the header was a great mod. Just wondering about the tq and air fuel. Hp gains were too crazy for just a header add. Especially on stock everything untuned.






Modified by kay_animation at 8:47 AM 3/13/2006

 

that's a dynapack, so the setup there can have a great deal of relevance with regard to the final output graph. i've heard things about ramp rates, gear inputs, etc, so those may be some things to check.

if you're running off the jdm ecu, i'd suspect that the torque may be suffering - as the timing maps may not be optimal for the usdm gas in your car...

either way, i'd recommend some actual tuning asap to get the most of your mods.

 

alright

Sounds good but my problem is I'm not really sure what tuning I need. It's a stock setup so I'm guessing I don't need to go too crazy with s200 do I?

And from what I hear, vafc does not do changing.

But are you talking electric controller tuning or like cam gears to make changes?

 

don't feel bad, my 97 jdm itr made 138 whp on a friend's dynapack. waiting for my k&n drop in filter, and to check timing before I put it back on.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by YumVTEC &raquo;</TD></TR><TR><TD CLASS="quote">don't feel bad, my 97 jdm itr made 138 whp on a friend's dynapack. waiting for my k&n drop in filter, and to check timing before I put it back on.</TD></TR></TABLE>

Wow, well, I wasn't that low. HP was sooo nice. You might have made the same tq as me though.

I'll just say I have a built b16a2.

 

If you are running a stock tranny, your gear ratio was input into the Dynapack wrong! If you have a stock 97 JDM ITR tranny your final drive is a 4.40 and your 4th gear should be 1.11. When you multiply that together, you get 4.88 not 5.0. This larger ratio is going to make your horsepower and torque readings a bit higher than they actually are.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 98 Spec R &raquo;</TD></TR><TR><TD CLASS="quote">If you are running a stock tranny, your gear ratio was input into the Dynapack wrong! If you have a stock 97 JDM ITR tranny your final drive is a 4.40 and your 4th gear should be 1.11. When you multiply that together, you get 4.88 not 5.0. This larger ratio is going to make your horsepower and torque readings a bit higher than they actually are. </TD></TR></TABLE>

Not what he really wanted to hear

 

Tune that car... seriously... I made 174.5 and 117 on a MUSTANG dyno with a bolt on jdm itr motor. That AFR looks like a mess... the oem ecu is wasting the boltons.

I use crome and a chipped ecu... which is what you'd probably need to do, in that EK you'd need to worry about emissions/obdII stuff... but a conversion harness, chipped ecu and a good tuner should net you quite a bit more. This is just a fuel tuned map also, no ignition work for power.

This is a jdm itr similar to yours, smsp 4-2-1 and aebs manifold are the noticeable differences...


Those numbers would equate to ~ 195/131 on a dynojet... at the low 12% estimates... but whatever.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 98 Spec R &raquo;</TD></TR><TR><TD CLASS="quote">If you are running a stock tranny, your gear ratio was input into the Dynapack wrong! If you have a stock 97 JDM ITR tranny your final drive is a 4.40 and your 4th gear should be 1.11. When you multiply that together, you get 4.88 not 5.0. This larger ratio is going to make your horsepower and torque readings a bit higher than they actually are. </TD></TR></TABLE>

Yes, 4.4fd itr tranny. Thanks there guy

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mugenracer &raquo;</TD></TR><TR><TD CLASS="quote">Not what he really wanted to hear </TD></TR></TABLE>

Not really

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by splitime &raquo;</TD></TR><TR><TD CLASS="quote">Tune that car... seriously... I made 174.5 and 117 on a MUSTANG dyno with a bolt on jdm itr motor. That AFR looks like a mess... the oem ecu is wasting the boltons.

I use crome and a chipped ecu... which is what you'd probably need to do, in that EK you'd need to worry about emissions/obdII stuff... but a conversion harness, chipped ecu and a good tuner should net you quite a bit more. This is just a fuel tuned map also, no ignition work for power.

This is a jdm itr similar to yours, smsp 4-2-1 and aebs manifold are the noticeable differences...


Those numbers would equate to ~ 195/131 on a dynojet... at the low 12% estimates... but whatever.</TD></TR></TABLE>

Cool, so I'll look into getting some tuning stuff next.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kay_animation &raquo;</TD></TR><TR><TD CLASS="quote">Cool, so I'll look into getting some tuning stuff next.</TD></TR></TABLE>

I'd say yes Even a completely stock non-bolton motor can see gains from tuning. You'll be happy you did. Find a good tuner and check with them on tuning gear preferences though... thats important also. If you choose one option to tune... and can't find someone to do it.. you might be up for a long drive

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by splitime &raquo;</TD></TR><TR><TD CLASS="quote">I'd say yes Even a completely stock non-bolton motor can see gains from tuning. You'll be happy you did. Find a good tuner and check with them on tuning gear preferences though... thats important also. If you choose one option to tune... and can't find someone to do it.. you might be up for a long drive </TD></TR></TABLE>

Got ya. Thanks

 

let's head to inline and start shopping...

 

shoot