I was told after I purchased my motor that it had aftermarket injectors (not sure on the size), and a chipped ecu. The guy that sold me the motor also told me that the turbo looked different from the normal s13 sr20det t25 turbo, but not bigger. These mods plus a boost gauge are all I've done except for lsd.
Well a few weeks after getting the sr20det installed I decided to go with a few bmw friends to atp turbo in norcal to dyno test my car. The car normally runs .45 bar or 6.6psi, and occasionally I'll disconnect the tube running from the wastegate to the intercooler piping, this gets the car to peak at .85bar or 12.4 psi, after 5k rpm is starts to fall to around .7 bar.
sorry just copy an past the link wtdr is being gay, add a w infront of the link
ww.we-todd-did-racing.com/wetoddimage.wtdr/i=wMTA0NjY3NnM0MTNkZmQzMXk1NDE%3D
(if its too unclear or small I'll post a larger image)
I did three runs total, one with the wastegate tube connected at stock boost, an the other two with the wastegate tube disconnected. looking at the air fuel ratio graph it seems as if I'm running extremely rich, maybe its just me but it looks as if I'm running too rich, keep in mind I'm running the stock ka24de fuel pump. The number written next to the hp # is the gear I did the run in, 4th gear produced the highest numbers, I decided to try an do a 4th gear run because I read somewhere that 4th for the sr20det was closest to 1:1 ratio, but I don't think most people do their runs in 4th
dyno testing done! sr20det weak sauce
I was just joking, I'm pretty happy with the power, feels very torqy. Has stock Intercooler, 3inch down pipi going to stock exhaust system, so pretty much what I posted is what I have for mods. But doesn't it seem really rich to you or is that how its normally supposed to be so the motor wont blow up.
-
Cyberkreig
- Posts: 3048
- Joined: Sun Sep 01, 2002 4:40 pm
- Car: 1993 Nissan 240SX SR
- Contact:
-
the_invisible
- Posts: 229
- Joined: Mon Feb 24, 2003 7:51 am
- Contact:
-
Cyberkreig
- Posts: 3048
- Joined: Sun Sep 01, 2002 4:40 pm
- Car: 1993 Nissan 240SX SR
- Contact:
-
the_invisible
- Posts: 229
- Joined: Mon Feb 24, 2003 7:51 am
- Contact:
It seems like your engine is running slightly on the rich side, but not excessively so. You said that your engine has upgraded injectors and ECU, these are probably the cause. Also, poor grounding and sticky thermostats can cause your car to run rich also, but I doubt those are the cause. As for the stock KA fuel pump, it looks like it is adequate for your application, considering that you are not running lean at all!!!
BTW, congrats on your nice numbers! Pulling 180hp with stock exhaust and IC is amazing!
Oh yeah, what is your motor? Black or red?
BTW, congrats on your nice numbers! Pulling 180hp with stock exhaust and IC is amazing!
Oh yeah, what is your motor? Black or red?
well not exactly sure if the 180hp 197tq reading counts cause that run was done in 4th gear, the other two runs were done in 3rd gear, the thing is since the motor is under more load in 4th gear it runs slightly higher boost, so I think thats also why the hp and torque numbers are higher in the second dyno run. I think most people do their runs in 3rd gear, so the 174hp and 185tq are more realistic numbers. I have a red top with approx. 90,xxx km, and I get about 18miles per gallon which sucks.
as far as I know the car has
1. hks intake filter, mushroom looking one2. cusco intercooler piping (which connects to stock ic)3. 3inch down pipe4. aftermarket injectors (no clue on size)5. chipped ecu to run the injectors6. z32 fuel filter7. hks boost gauge8. lsd (not sure which one just installed it, it bolted right up with out any modification to the shafts, seems to be the same gear ratio though)
as far as I know the car has
1. hks intake filter, mushroom looking one2. cusco intercooler piping (which connects to stock ic)3. 3inch down pipe4. aftermarket injectors (no clue on size)5. chipped ecu to run the injectors6. z32 fuel filter7. hks boost gauge8. lsd (not sure which one just installed it, it bolted right up with out any modification to the shafts, seems to be the same gear ratio though)