Turbo's on OBD II??

If you are talking about tuning one, the MSL AEM EMS is the solution. It's a modified AEM and it works with the throttle by wire cars. Myself and Cody(Lovefab) have used it with success, I'm not sure about HP. FX likes the HKS Fcon but finding an authorized tuner is the issue with that system.
 
My msl/aem does fine with my lovefab
 
Look out for the AEM FI/C in the near future. It is currently available, however, only as a "generic" box that works with approved and tested cars only. Does not work out of the box for the NSX however, that is being worked on now. We will be testing a 1995 and later model shortly.

Cheers,
-- Chris
 
collegeboy said:
I've always heard that OBDII cars were much harder to tune properly and heavily modify for example with fully built engines and larger turbochargers. Is this true? Or just a myth?
Click to expand...

They are not more difficult to tune as many OBD1 vs OBD2 cars are mechanically the same, only different in electronics. A more apt way of saying it is that OBD2 cars are more difficult to interface with conventional engine management electronics.

Cheers,
-- Chris
 
Chris@SoS said:
They are not more difficult to tune as many OBD1 vs OBD2 cars are mechanically the same, only different in electronics. A more apt way of saying it is that OBD2 cars are more difficult to interface with conventional engine management electronics.

Cheers,
-- Chris
Click to expand...

Well said.

Because of things like throttle by wire, most standalone ecu's can't or don't support the platforms.
 
Chris@SoS said:
They are not more difficult to tune as many OBD1 vs OBD2 cars are mechanically the same, only different in electronics. A more apt way of saying it is that OBD2 cars are more difficult to interface with conventional engine management electronics.

Cheers,
-- Chris
Click to expand...

What about when it comes to passing emissions and such. I know with OBD1 cars it's a simple job of tossing stock cats back on. How about with OBD2...since don't they usually just plug your car up to a computer and it tells you whats wrong...or in our case missing :-x. I really am curious, b/c I'm trying to decide between going with a newer 02' car like I was previously planning on doing, or starting off with a 91+ model. Thanks.
 
I can't speak for every emissions station, but generally if your ODBII port is disabled they will make you fix it as opposed to deferring to the tail pipe check. It need be working with no CEL's.

In that regard, ODB1 vehicles can be easier if emissions compliance is an issue... unless they can't get your car on the dyno roller because it is too low. :wink:
 
Dissapointing, but what I needed to hear. Thanks. :)

John@Microsoft said:
I can't speak for every emissions station, but generally if your ODBII port is disabled they will make you fix it as opposed to deferring to the tail pipe check. It need be working with no CEL's.

In that regard, ODB1 vehicles can be easier if emissions compliance is an issue... unless they can't get your car on the dyno roller because it is too low. :wink:
Click to expand...
 
THanks guys! Its funny cause in my world (superbikes) we can build them NA, NOS, Turbo, etc and no worries. Seems the Bikes are still a bit further ahead in terms of tech....but yet still VERY VERY easily to modify...of course its what i do for a living, so easy for me to say.

The search is on now..i really liked my 91 (was by far IMO the cleaned 91 in NW) but wanna find a 95-99ish one and have really been impressed with all the talk on here about Lovefab and HP.

As for some "old guys" (jk..im not young either) i could care less about AC loss, or such. Hell, i drive my "toy" car about 3000 miles a year and i have no issue even running VP fuel (sponsor of ours) so i guess i got a little easier job in building a nice turbo'd NSX. Would like to see REAL 420-430rwhp (yes on race gas is fine)
 
I am running the new AEM FIC on a 97 NSX. We had some tuning necessary to get things right, but I am pleased to report that everything is working perfect. No issues, no loss of TCS, etc. I couldn't be happier.
 
Hi Guys,
I just got done testing/tuning/dynoing the new AEM FIC on a Comptech Supercharged 1998 NSX with very good results. This is a great system and is the forced induction answer for any one with a OBD 2 NSX. Eric, give me a call and I would be happy to help point you in the right direction. Cheers, Shad 916-861-0032 or [email protected]
 
We have been involved with Beta testing the AEM FIC for the NSX from day one and have helped to iron out a GREAT product!

The tuning is quite simple if you have any tuning background. Our basemap was created by simply calculating the differences between larger injectors and the stock injectors, and then adding the proper amount of fuel per-psi of boost. The important step here is to check your readings from an OBD2 scan-reader so that your short and long-term fuel trims are not off in left field. If these readings are off, the fuel map must be adjusted to get them back to where they should be, otherwise the Check Engine Light will click on. OBD1 cars(1991-94 year models)will be difficult to get a proper tune with the FIC because there is no way to cross-reference fuel trims and you will be shooting in the dark.

The car drives exactly as it should from the factory, with functioning Check Engine Light, functioning Traction control and every other wonderful attribute of the factory NSX that is taken for granted just "works". It's wonderful :) Besides, if "Duffer" can be pleased by a product, than it's a great product!

If anyone has any questions, don't be afraid to send them my way as well!

Thanks,

Cody Loveland
LoveFab, INC.
 
collegeboy said:
Dissapointing, but what I needed to hear. Thanks. :)
Click to expand...

How does Comptech tune an OBDII car with their SC? IIRC they pass OBDII emissions by some sort of scaler correct?
 
CarCrazed4Life said:
How does Comptech tune an OBDII car with their SC? IIRC they pass OBDII emissions by some sort of scaler correct?
Click to expand...


They really do not tune the car as much as they adjust the air fuel ratio mechanically, and the mechanical adjustments that are made are minimal. These other devices the guys are talking about will allow for an electronic adjustment of fuel and timing, based on load, just what a FI NSX needs.

Dave
 
DDozier said:
They really do not tune the car as much as they adjust the air fuel ratio mechanically, and the mechanical adjustments that are made are minimal. These other devices the guys are talking about will allow for an electronic adjustment of fuel and timing, based on load, just what a FI NSX needs.

Dave
Click to expand...

Its funny, because on the BMW side, we have a few ECU tuning options that allow that modification of the factory unit. It would do exactly what the ECU does now, fuel timing, part throttle, full throttle, open loop, closed loop...etc.
 
CarCrazed4Life said:
Its funny, because on the BMW side, we have a few ECU tuning options that allow that modification of the factory unit. It would do exactly what the ECU does now, fuel timing, part throttle, full throttle, open loop, closed loop...etc.
Click to expand...

Yah, people don't seem to have good luck cracking into the jap computers.....or maybe you just can't. The firmware is not accessable or updatable maybe :confused:
 

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