Hello. I'm looking to buy a used Integra GS-R for street/autocross use. I've read inferences on various websites that the earlier OBD-1 controlled engines may be more favorable for bolt-on hop ups than the later, OBD-2 engines. Is this true? Is it critical? Should I try to find an earlier car, or not worry about it?

Thanks!

Ferd
(still looking.....)

 

The OBD-1 did a little bit better with bolt-ons but I don't know how much better. It's also easier to reprogram the ecu on them.

 

you can easily make obd2 perform as well as an obd1 car will. A hondata setup, whic i would highly reccomend, has an adapter to use their ECU managemtn system on an obd2 setup. www.hondata.com for more info. However if you dont see yourself doing this change, the obd1 cars out of the box will run better if both cars were brand new, but i would estimate the higher milage on 94-95 obd1 teggs comared to lower milage obd2 teggs would even them out with both teggs stock. HTH

 

In order to drop an OBDII Integra back to OBDI, it will run you about $400. You'd need to do this in order to chip your ECU or run a Hondata system.

 

to go from obd2 to obd1 you need an obd1 ecu. i don't know who chips obd2 ecu's.

but get obd1 ecu, and get the plugs that go into the ecu. run the wires from the old harnass in to the new one. just get a map of which wire goes where....

i don't think it does ****.

wouldn't worry about it, but that's just me.

 

Thanks for the feedback, guys. I'm not having much luck finding the older Teggs andyways, so I will probably end up with a later model. Went looking yesterday. Seems like most GSR's have leather seats (sweat city). I plan on replacing the seats with more aggressive ones anyways, but it bugs me to have to pay a premium for something I don't want and will remove anyways. Oh, well. There's always E-bay.

Hey, I drove two v-tech's yesterday and am curious about something. I've heard numerous v-techs at autox's, and can distinctly hear when the engine changes modes at higher RPM's (I understand that that's not the cam part of the vtech, but changes to the intake manifold?). The 2 cars I drove did not seem to do that. Is this something wrong, or do you need to modify something like the exhaust to hear this???

TIA.

Ferd
(searching and learning)

 

#1: VTEC, not vtech.

98 and previous GSRs did not come with leather seats standard, but 99+ did.

A cold air intake drastically increases the sound of a vtec motor's intake growl, so it will be much more pronounced than any car with the stock resonator still in place.

Also, the sound you are referring to is the intake manifold switching from long to short runners and should happen at 6000 RPMS. It should definately be an audible difference, even stock.

 

odb1 vs odb2 is a myth started by one of the import car magazines.

They took two cars, one ODB1, the other ODB2 and installed the same header on both of them, then wrote a whole article about ODB2 being so restrictive when the header did better on the ODB1 car.

What they didn't mention is that every engine is different, and will respond to modifications differently. It would have been incredible if they *DID* get the same results. Going from ODB2 to ODB1 is reasonable if you want to install a chip, but for just the performance difference you are spending a ton of cash for nothing.

 

OBD1 has its advantages. Not saying it will produce more power with the same mods.

 

VTEC, VTEC, VTEC. I guess I better work on that (I'm an engineer, so I guess I'm just used to puting an "h" after "tec".)

I'm having trouble finding GSR's at all, so whatever year I find is what I will be going with. I'm testing another one tonight, so I will listen harder for the manifold switch.

Thanks again for your advice, guys. This forum rocks!

Ferd