I have a stock b16 but i had it runnig on the jdm ecu. It kicks in late but it pulls very hard. Now with the gsr it kicks early but it dont give me that pull i was getting from the jdm ecu. Which one do you guys think works better. I am asking people who have tried it.

 

What's a "jdm" ecu, all ecu's have an ecu identification code. What's the difference betweenn the two codes?

I.E. p70, p72, p28 etc etc.

 

i think it was p30

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by beast16a2 &raquo;</TD></TR><TR><TD CLASS="quote">I have a stock b16 but i had it runnig on the jdm ecu. It kicks in late but it pulls very hard. Now with the gsr it kicks early but it dont give me that pull i was getting from the jdm ecu. Which one do you guys think works better. I am asking people who have tried it.</TD></TR></TABLE>

Wierd... I have a JDM ITR ECu in my car right now (P72) and I used a USDM SI Ecu (P2T) to pass emissions and I felt a huge down fall with the P2T... THE ITR ECU just pulled and is frikkin awesome... However, the P2T kept giving saying my fuel was too rich ... I don't know

 

I dno't think there's any "JDM" magic involved. It's just two differen't ecu's with two different means of engaging vtec.

B16 ecus usually have a pretty harsh changeover.

Gsrs are known to have a milder, less noticeable changeover.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by beast16a2 &raquo;</TD></TR><TR><TD CLASS="quote">I have a stock b16 but i had it runnig on the jdm ecu. It kicks in late but it pulls very hard. Now with the gsr it kicks early but it dont give me that pull i was getting from the jdm ecu. Which one do you guys think works better. I am asking people who have tried it.</TD></TR></TABLE>

i'm taking it your motor is jdm too.
i'm running the P30 and i have no complaints. the P30 is fine, continue to use it.

 

i understand but i am saying when vtech kicks in at 6 on the so call jdm ecu its pulls i can feel it. But the gsr kicks in about 4800-5000 rpm it feels like i am losing power and it aslo takes longer to red rev boot

 

no it is not jdm usdm

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by beast16a2 &raquo;</TD></TR><TR><TD CLASS="quote">no it is not jdm usdm</TD></TR></TABLE>

hmmm...the reason i asked is mine came with the P30.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by beast16a2 &raquo;</TD></TR><TR><TD CLASS="quote">i understand but i am saying when vtech kicks in at 6 on the so call jdm ecu its pulls i can feel it. But the gsr kicks in about 4800-5000 rpm it feels like i am losing power and it aslo takes longer to red rev boot</TD></TR></TABLE>

is the ecu from the gsr chipped? i was under the impression that vtec kick in at 5800. i know mine does.

 

nope the gsr kicks in at 4800 5000

 

also keep in mind that the P72(GSR ECU) will run the car richer, thus making any transition feel a little muddy.

If you have a JDM B16, the JDM P30 runs the car like it should be run. If you have a USDM B16, the JDM P30 is pretty close but the hard to find USDM P30 would be better.

VTEC points
JDM P30 - 5625 WOT (5875 cruising)
USDM P72 - 4875


best way to go.... have the car tuned and set the VTEC point according to the power output read by a dyno.

 

use the ecu that came with the engine. by using a gsr ecu you're most likely losing power. your *** dyno is not an accurate judge of performance.