Just wondering exactly when the redline starts, and when fuel cutoff is on a 98 JDM h22a. Im too scared to take it that high until the fuel cutoff comes on. Also, is the VAFC or stock tach more accurate in reading the rpms?

 

i believe the limiter is at 7600 rpm.

 

The Vafc is the most accurate.Stock tach is usually off.
I thought the JDM h22a engines don't have rev limiters.Or is it the OBD1 engines?

 

i dunno about obd2 but mine (95 JDM) is at 7600. i was just assuming they were the same.

 

Fuel cutoff is usually 200-300 above redline.

 

200-300rpm when the redline starts or ends? Im guessing when it ends because you can go past your redline for a while.

 

When is starts. For example, the F22 redline is 6250, and cut off is 6400. The tach goes to 8000.

 

what the hell is the point of the tach going that high then? Does the 98 JDM h22a start at 6800 or 7200? Thanks I dont want to hit fuel cutoff with my nitrous.

 

Well, I am glad that the tach goes that high since I wil be upping the rev limiter to 7000rpm as soon as I upgrade the valve springs.

 

Stock tachs are inaccurate as hell. Mine was off by about 400 rpm at redline, thats a big difference.

 

With my APEXi Rev/Speed meter i hit the rev limiter at 8238 i think is what it got up to.... with out the p13 being chipped!!!

 

my p13 rev limiter is at 7800 now i run a chipped p28 w/o one

 

what? you dont have a p13 ECU then.

 

yah i have a p13 im sure. but the fuel cuts off at 7800rpm....

 

I dunno about the JDM but the USDM I think is 7,300 redline and 7,700 fuel cut. I sure hope the VAFC is inaccurate as the tach. My VAFC shows peaks of over 8,000 RPM while the Dynojet shows only 7,600.

 

no p13 for me i run a chipped p28 and i'm purchasing a hondata stage2 for it to put the p13 maps in and then tune from there i use the p28 because i run my secondaries open all the time and i never could get my egr to work properly

 

is this on a JDM motor? Why run the secondaries open all the time? At the top end you still have the same air flow, but mid range and low end must suck. I dont see the benefit. Did you do the A6-A11 ECU pin switch for the EGR? I did it before I ever started my motor up and ive never had an EGR code.