took my 1999 gsr to find out how much power i was really making. Its a stock b18c1 gsr with original tranny, 128xxx miles and the following mods:
-JDM type r ecu p73-003
-RSR ceramic coated headers
-skunk 2 intake manifold
-tanabe cat-back exhaust
-type r intake tube with k&n filter
-hondata gaskets
-type r throttle body

Ran it on a dynojet and did 3 pulls at 9k. Each time it was 145whp and 110tq.
I would've guessed at least 165 to the wheels. could the jdm ecu be the problem? maybe messing up the afr to where there is a dramatic loss in power? I have a usdm gsr ecu that i put in to pass inspections and it threw 02 sensor codes the other day. I replaced both the upstream and downstream sensors so idk if that might have something to do with it. any input would help.

 

why are you running any ecu other than stock?

 

ill upload a better quality picture later.

 

The skunk2 mani is killin your midrange.

 

it came with the car when i bought it.

 

X2
Also is it tuned?

 

stock gsr's make ~140-150whp. with your gaggle of parts, im guessing no tune, and dependent on health of the engine, your numbers are about right.

 

not tuned yet. i bought it a month ago as is to turbo it. im gonna be buying a p28 and running s300 very soon. im just surprised that it lost that much hp due to an ecu. Just goes to show how much of a noob i am. Can anyone tell me specifically why the power loss happened?

 

ah good to go. ill have it tuned and post the improvements.

 

Dyno's read vastly differently. I bet a "160" whp car could find a dyno where it read 145 and one where it read 185. That said I agree that your ECU is probably holding you back. I bet you're rich and that the timing is off.

 

are those spark plugs necessary? oem sumitomos(spelling??) are the best plugs, better than NGK.

 

ngk is oem. where did he mention spark plugs? i must've missed it.

 

lol, thinking the same thing here....

Anyways, my guess is the ecu, try to find either a stock one on the cheap, or upgrade to a chipped ecu like Hondata so you can really get the power down out of your mods with a solid tune. And to be honest, that intake is clean but if you want to squeeze the hp out of an all motor setup then you really need to get a real aftermarket cold air intake or short ram that utilized a well known filter. Built in velocity stacks are common these days in brand name filters and really do help.

 

yea i know i need to upgrade the intake. i just ordered a chipped p28 from phearable.net with they're basemap. i'll eventually get s300 and have it fully tuned but hopefully ill see 165whp just from the ecu change.

 

Well, That IMO would be a HUGE gain from just swapping the ecu, but I hope it works for you man.

 

your're right lol i guess i've had my head in the clouds a bit. but i would think a b18c1 with i/h/e and a basemap tune would see at least 160-165. we'll see next week when i take it back i suppose.

 

You are basing that off of stock numbers though, but your engine has miles, and wear and tear, after years of use your engine will not make factory hp.

Pluse your not tuned, if it were tuned you would have seen better results, and with the right ecu it would be better as well.

 

i tried every ecu that would plug into my gsr looking for a little extra and nothing performed as well as my stock p72, the only thing that will perform better is one dyno tuned to your ride and mods specifically

 

Am i the only one that noticed the title "with full boltons" and then looked at the shot of the bay and saw a stock intake set-up. i would say you could free up a decent amount up top if you get rid of some restrictions.

 

What you mean lost? You never dynoed it before swapping ecus.

The reason is, you are running an ECU for a motor that is NOT A TYPE R MOTOR

Just because a type R has more horsepower, it doesn't mean that the type R ecu gives you more power



Get a tune. Your car is running rich probably

 

compression test? leak down test? is the motor healthy to begin with?

I would start here before I even look at any of the mods. but that's just me.

 

stock b18c1 >did 3 pulls at 9k

is like
stock LS motor> did 3 pulls at 10000 with b20 ECU still got no torque ... wtf.

gsr motor red line is 8100 and its there for a reason.

props on clean engine bay tho.

 

Could be an icebox setup. Nothing wrong with the stock intake, he's only losing out on 1-2hp.

 

^^^^true. i run a stock intake. and when i want it to whistle i take the top off. cant see spending hundreds on a shiny pipe with a subpar filter anyways.

 

^ ahah exactly, I'm rockin the stock rubber tubing with like maybe 1 foot of hard pipe and a filter attatched, but I'm really thinking about putting the stock box back on and making it an icebox setup, or just throwin a velocity stack on the stuck tubing haha ghetto, but it would work well.

What I really want is the "ricebox", All In Fab custome makes it, but the air box looks like a big box of rice haha

Tell me this aint ballin-