im runnging a usdm gsr ecu in my jdm motor. does this effect my performance? or should i shop for a jdm one.. i was racing with my friends usdm gsr at the track and i only beat him by a fender. (same set up) i thought the 10 horse for the jdm would b a diff

 

ne1?

 

I don think the ecu would make a difference. Yea the 10hp is not that much, probably a fender like you said.

 

more inputs plz..

 

JDM gsr motor only has higher compression, so a fender sounds good to me. You not going to smoke someone with only 10hp more.

 

I know this post is quite old, but I am still trying to search for this answer. Has anyone used the JDM GSR ECU? Is there a difference in POWER? Lastly, I checked out Ebay and saw some chipped ECU's that were for the JDM GSR's. Would I buy these or do I actually find a OEM JDM ECU?

 

of course there would be a difference.the usdm ecu is tuned for emission standards,while as the jdm ecu is made to run richer with more fuel.
there is a 10-20 horsepower difference on ANY jdm vs usdm car.jdm always will have more power than a usdm,again,due to the ecu being tuned to run a certain way.


here are the specs.the jdm gsr motor is the sir-g
http://amfeatures.tripod.com/id9.html

as for where to get one,id be careful trusting ebay(a lot of their "jdm" stuff is just a knockoff of the real deal).Im sure it would work,but without a dyno there is no way of confirming any of that..

and for the people saying a 10hp gain is nothing is just...well..i dunno what to say about it,you get the idea..

 

frostykue: I recommend that for best results, you start a new post for your specific questions instead of reviving old ones. There are plenty of people who use a JDM ECU. I don't think it would yield anymore power than a USDM ECU, it may even be less. I'd recommend you use a USDM ECU and only change to programmable if you have the ability to dyno tune the car to the ECU.

Juicy, a JDM ECU is made to run richer? Really? Japan has emissions regulations too. And even then, simply making the fuel mixture richer does not make more power.

By the way the number you should really be looking at, all else equal, is torque. HP is just a mathematical function of torque and RPM, and is a representation of work done over time. So don't think the 0.6 of CR is going to do anything for you at the track.

 

Ill stand corrected then.Only because i dont know any of this for sure.The only REAL way to know would be on a dyno,dont you say?
i still believe a 10hp gain is pretty significant..at least for a street car.

 

So right now I believe I am running a chipped ecu but im not sure. I do have the usdm p72 but the chipped exu seems to pull harder then the p72. If my ecu ie chipped, do you guys know anyways how i can figure out what its mapped to or even if its chipped. It does say REDLINE at 9200 RPM. I assume this means its chipped.

 

No I thought the same we have bigger cams and piston but u need a tune

 

Bump

 

10hp is nothing. You can lose to someone even if you have 10hp more than they do just by having an extra few lbs in your car. Now...10ft-lbs tq is a different story. Maximum acceleration of a car is made possible by maximizing your output torque at the wheels at ALL times. A car that only generates 50 ft-lbs of torque, but but can do it between 10,000 and 20,000 rpms will still make 190 hp, but it's not going to go anywhere very fast due to the low torque it's able to generate.

 

make your own post next time. you will get better answers.

and 10 hp is not that big of a diff. ecu shouldnt matter, usdm gsr or jdm gsr. id go with a virgin one so i can trust its ok.

 

bump