Recent content by greenberet

Please note: With modified injector latency values (see this thread), my NSX can now idle stably AFTER the PGM-FI has learned how it needs to adjust the fuel trims or whatever it does behind the scenes. If I disconnect the battery and the PGM-FI forgets the adjustments it had learned to make for...

Using Matt's old definition, I had new maps programmed for my engine after installing 410cc turbo RDX injectors. The idle from a cold start is fine AFTER the PGM-FI has learned fuel trims. If the battery has been disconnected, the engine dies at idle unless the gas pedal always depressed at...

Maybe someone could host .bin files (the datasets) from additional NSX ECU chips. I have a few that are not on Matt's website such as from a JDM and from an EDM NSX (I think, I haven't looked at them in detail for a while).

Yes, there are different maps. To look at the manual vs. automatic sides of an NSX chip using TunerPro: Under XDF / View_Edit XDF Header Info / Base Offset (Hex) (or hit CTRL and F2) 0000 = view the manual transmission side of the chip 4000 = view the automatic transmission side of the chip...

I look forward to this thread! Matt, do you have a definition of the NSX's PGM-FI that allows the maximum rpm of the engine to be adjusted as well as the rpm at which the VVIS changeover occurs? My gut feel is that a datalogging capability for the PGM-FI would allow a better tune to be...

Just as a note, immediately after Comptech camshafts were installed in my engine, I very gently drove to Autothority in the Washington, DC area to have them custom program a chip with my car on their dyno. I don't know how good a job they did but my car did burn the ceramic coating off the...

I think I uploaded a dyno chart to my gallery here on NSX Prime years ago so that it would remain available over time but it's not in my gallery anymore and several other pictures seem to have disappeared as well. In any case, the measurements indicated that my engine produces peak horsepower at...

Dear Dave, Yes, I'm doing well but I haven't made any more aero mods to my NSX yet. The rear Bilstein dampers on my NSX have some custom grooves about 1/4" (if I remember correctly) lower than the stock lower grooves. Like that, the gap between the top of my OEM 2002-2005 wheels and tires and...

Yes, I'm still using my original 1991 USDM Acura NSX valve springs. When Comptech came out with their own valve springs, I called them up to ask whether I should buy a set and they said no, that's not necessary. With the Comptech valve springs, Comptech camshafts could be installed without...

My engine is still going strong so the combination of stock valve springs and Comptech cams has held up about 24 years now. However - when I bought Comptech's internal engine modification package in the winter of 1994/95, they weren't offering their own valve springs yet. They drilled the valve...

I say perforated. I thought about recovering the seats of my 1991 with perforated leather due its breathability but for the sake of originality, I decided against it. You've got it good!

Don't worry, I'm sure no one takes offense with anything you wrote. But just between you and me, I'm sure we can agree that actually, I am the benchmark for good taste. If anyone's taste differs from mine, objectively speaking, their taste is bad.

I fully agree but despite that, the rev limiter in my 1991 kicks in just after an indicated 8000 rpm on the tachometer - way below 8300. Maybe an external rev counter could be hooked up to the engine while driving, running the pickup wire back to the engine compartment and using the cigarette...

I'm not sure whether it's just me but what Pole2Flag has been proposing has been very clear to me from the first post. The guy at MVO who made the chart was probably deciding between a "Steering Ratio" and a "Rack Gain" chart and simply slipped up. I look forward to the corrected chart. If...

When my brother drove my NSX a few months back, he was surprised how heavy the steering became in fast turns compared to his Porsche 991. My neighbor just had an electrically-assisted steering column made for his old Healey by these guys and is really happy with that. He says the steering feel...