GrimmSpeed needs a dyno test car for Monday!

We are going to be dyno'ing our pnp'd mani and HiFlow crossover on monday night around 6:30-7:00 at LSE. We need a test car since mine is under the knife. I'd prefer something around a STG2 WRX.

http://www.grimmspeed.com/

 

Someone help this man out!

 

how long is the test gonna be fore?
i might be interested, hm....

 

3 pulls with your stock setup, then swap out the header, 3 pulls with the pnp'd setup. it shouldnt take to long. couple of hours at most.

 

I can do it, I have a full cobb stage 2 2.5L WRX and pretty much nothing but time since i'm unemployed.

 

u should do it zack
if not, i will

 

sounds good zack. lets do it. pm me your cell number

 

If he can't I'll do it. stage 2 2004 rex

 

Ummmm....the headers and crosspipe are different on the '06 WRX. I'd be suprised if it fits.

 

oh yah, true...damn

 

doesnt matter, it will work.

 

if not, I will do it. Do I get to keep the headers and crosspipe as payment for my time? hehehe

 

^ i think u get free dynos.... lol

 

never hurts to ask...

 

Have you tested this?

I'm almost certain that the crosspipes are different between the 2.0 and the 2.5WRX.

 

The crosspipes are definitely different, but if you pull off the whole manifold/crosspipe/collector assembly, I bet the EJ20 one will bolt up to the EJ25. The only reason it may not is because the heads are bigger. Isn't the timing belt cover bigger, too? The exhaust ports and the end of the uppipe should be in the same place.

 

^if you change the whole collector and cross pipe, it will line up, now if you were to just change the crosspipe and leave the newer collectors on i would foresee a problem. Same as the FXT's have diffrent collectors so there is a diffrent cross pipe.

 

Exactly. However doesn't he just want to swap out crosspipes? That's the inherent problem here.

 

no, i think he said he wants a dyno pull on stock exhaust mani, and a dyno pull with ported manifold and bigger cross pipe

 

for those that didnt read the whole thread! :laugh: j/k

 

Oh shut up, lol.

Ok, then let me be the guiney pig!!!!!!!!!!!!!!!!!!! Seriously.

 

So free pulls will turn you into a hamster? :biggrin:

 

I would think the whole assembly would be shorter when put onto a 2.5L if judging by the crossover I built for Fong at the last Meineke meet... It was pretty much a straight piece of pipe... and the manifolds are longer from memory...

so I am not convinced that it would work or not.. I have a feeling putting ont he setup from the 2.0 may put the piping too close to some oil lines near the filter or something??

interested to see if this works...

speaking of crosspipes... Tom maybe we shoul duse yours as a test bed for some x-overs on the 06/07... didnt I hear though that the 06's dont have a flex or something in the x-over??? does it even need a new one?? if so Grimmspeed... wink wink... ha ha ha.. I would make 100 of them before 10 more of the 02-05 x-overs.... hah ha ha

 

i'm lost...why would you make more of the 06's over the 02-05's? neither of them would have the flex.

i dont see why this shouldnt work. as long as we are swapping out the collectors and crossover with the pnp'd/hiflow crossover set up it should fit fine. the only concern i have is if they lowerd the oil line that runs on the bottom front of the block.

 

Yeah, I'd be totally down for that. Based on a quick glance tonight between mine and wotboy's car, it looks like the '06 crosspipe is much smaller in diameter. I didn't take off the heatshields, but I'm pretty sure that is the case. Lame!

 

dam that sucks, the 02-05's are small enough already. looks like we'll have to make an 06 specific crossover.

 

You mean 06-07. Don't leave me out!

 

what I meant justin is if with the 2.5 block... if it is anything like the FXT of Fongs there is like ONE.... 1..... UNO..... bend and thats it.. took me less then 10mins start to finish to make Fongs... not like 45mins for one...like I said i am not sure if they are different or not btu I guess we can find out when I build one for him... ha ha ha

 

wait is it only for an ej20? You could test it on my ej25 if that works.

 

http://www.mnsubaru.com/forums/showthread.php?t=14924

 

Spoke to my source today. Turns out the car they used to test ran perfectly for the base runs and made some good power. So then they switched the headers or whatever and the car made way less power. So what happened?

Source said the people that were there were really upset that they sold a bunch of power loosing parts.

Conmments?????

 

sterring the pot..... always fun to watch

 

^Whoa...Not good, the plot thick'ins

 

Ok, from what i remember Josh saying after the dyno runs, he said the car ran about 1psi less after the larger diameter cross pipe was installed. He said it could be because the wastegate is running more efficiantly and opening up to soon. He also stated that if Justin had run a this on a car with a MBC he "should" have showed gains. IIRC Justin is gettting this worked out and getting anouther test car with a MBC on it and trying again.

 

How odd.

I have read all the header tests on Nasioc and do not recall them ever seeing a similar problem. They just swapped out headers, reset the ecu, gave it a day to learn, and put it on the dyno. No mention of a boost drop.

 

didnt let the ecu reset itself, swapped the manifolds and started the next dyno, so the ecu didnt "relearn"

yes

 

all I say is BULL_hit.... I know for a fact my x-over wouldnt cause loss of power as I have been running it or over a year with no loss of power, but better spool and response.... cant answer for the manifolds....

 

you dynoed before and after?

 

nope... but I also dont ahve all the polished stuff... and I can tell you i DID not lose any power when I added mine.... its all I added since I dynoed, then about 6 mths later TOM did openecu... and its MUCH better now too...

when I get back I am happy to go to the next 3 pull day... see what diffference I have form my first set up with STG2 AP and then TOM and x-over.... even if I lost a couple of HP it feels stronger, smoother and pulls way better... so I say it was soemthing else other then x-over and manifolds.... something was overlooked...

 

hmmmmm.......

 

first off, you have no idea what you are talking about so go back to your hole.

secondly, i was not upset at all. the car lost boost because the pnp and xover flowed more air causing the wastegate to become more efficient. the ecu become f'd and reacted sh*tty. i learned my lesson that we need to let the car learn for a day...not just learn for 10 seconds. also my guess is that the test car's wastegate needs to be tightened because it shouldnt be that loose. the dyno operator told us the car definitely gained hp/tq per psi of boost, but loosing the full psi of boost killed us. he said if we were to not lose that pound of boost by letting the car learn we would have gained ~10whp over the base runs.

thats all i'm commenting on this issue. this is the reason we didnt come out saying we lost power...we knew people like this would just spout off while not knowing the facts.

now i'm going to get back to my gf. have fun watching love boat with your mom.

mooommm, the meatloaf!!! fkkkk