Thread: New Dyno Test!! sr20ve

New Dyno with Ported N1 intake manifold with 197 WHP @ 8200 RPMs holding power all the way to 8500 RPMs




Old Dyno of 193 WHP @ 7200 RPMs with toyota 4age 43mm itbs

If the N1 manifold works better, wait until you have a proper short runner intake manifold made.


Numbers in Red are guesses


--------New N1-------- Old 4AGE ITB


7200-----192----------193 = -1 WHP
7300-----194----------191 = +4 WHP
7400-----195----------189 = +6 WHP
7500-----196----------186 = +10 WHP
7600-----195----------184 = +11 WHP
7700-----196----------182 = +14 WHP
7800-----196----------179 + 17 WHP
7900-----196----------177 + 19 WHP
8000-----196----------174 + 22 WHP
8100-----197----------171 + 26 WHP


if you look at area under the curve, the power diffrence is huge. I know you guys have a rev limit at 8600 RPMs and you guys shift at 8500 RPMs so I can only imagine the power diffrence to be very very large up there.

So previous WHP with 4age ITBs was 193 WHP @ 7200 RPMs and 148 FT LB Torque @ 6300 RPMs


New WHP with N1 intake manifold is 197 WHP @ 8100 RPMS and 150 FT LB Torque @ 6500 RPMs


It also looks like the power would have been higher as the power curve was still goiung up. I do know that your regulations state no more than 8100 RPMs.


This is a much more usable power band.

I am not a fan of ITBs but if you ever do use them they have to be much larger than 43mm.

When making the proper calculations for the ITBs there are a few things that you have to do. 1st you have to measure the area of the actual runners going into the head, 2nd you have to make sure the ITBs are larger than that. You have to make sure that the ITB area is as large or larger than the runner size going into the head. You have to measure the amount of area the plate takes up when full open and have to be sure the area of the ITBs minus the plate is atleast the size of the runner going into the head.

I would make a guesstamate that you would need to be up at about 48mm to be even in size to the port. I personally would go larger to have a velocity style runner going into the head, something like 52mm

Hello andreas if u can log on msn.

well our regulation rule for the race is 8500rpm limit we doing same power untill 8500 same line to 8500 very nice result tunning we racing the car all the time from 6500 to 8500 so this tune for us is so perfect honda killer!!

I am on MSN

we going to make a custome manifold with 4x 52mm itbs and test what will happend..

what do u think a custome manifold with TB 70mm or 80mm is there any guy out there building customes for the sr20ve engine??

nice what all is done to the engine?

Looks like 192 plus WHP from 7000 to 8500 RPMs. Perfect for racing, keeps the engine in the sweet spot all the time while shifting.



Looks like the old setup was loosing power fast. At 7500 RPMs the car was at 187WHP and droping fast.

Any pics of the 4age in your ve