My Dyno Results, And Few Questions

[JVP]

hey dudez, just got my car back fromt the dyno shop yesterday

it made 153.6rwkw. happy with that.

mods done so far:

FMIC

Pod

3" turbo back exhaust

turbotech bleed valve @12psi

now the afrs were at 14.1, which is high i know.

i am getting an ecu remap done hopefully this week by dr.drift

now my question is: this will obviously correct my afr reading, yes?

is it wise to get an SAFC-II to monitor all the afrs etc, etc??

thanks for your help in advance

cheers

jabba

cant get my dyno grpah up yet, but will try soon

[paulr33]

14 is very lean. suspect fuel pump on the way out.

dr drift will sort out the afr's. no need for safc.

it wont help you monitor the afrs.

once the tune has been done it will be sweet and afrs should be spot.

it should be near 12 on max load. 14 is too lean on max load

[prelude_1976]

U need a SAFC 2 to richen/lean up a mixture and urs is pretty lean.

I hope 14.1 is at cruise and not a WOT, because its hella lean, should be around 12 AFR, so u may need a SAFC 2 to richen up the mixture

[JVP]

  paulr33 said:

14 is very lean. suspect fuel pump on the way out.

dr drift will sort out the afr's. no need for safc.

it wont help you monitor the afrs.

once the tune has been done it will be sweet and afrs should be spot.

it should be near 12 on max load. 14 is too lean on max load

yeh, ray at re customs told me either an safc2 or dr drift remap

ok, ill probably go with dr drift then

cheers

[paulr33]

yeah remap will get it spot on. should be a lot safer and might get some more midrange into it. if it is in fact 14 on max load you shouldnt be flogging it on the street.

[R31Nismoid]

It will be fuel pump. Its 15 years old and needs replacing.

Change the fuel pump BEFORE you take it to be tuned/adjusted.

[GTAAAH]

Just curious as to reasons why he got 20 kilowatts more than me..

I have exactly the same mods as him (and a walbro) and i got only 135kw (was expecing 150 with a 34 turbo next week), would my far lower readings be because of different dyno setup or because of general engine wear? The guy at dr drift told me my engine was fine and my afr's were sweet so.. Just wondering.

Edited August 8, 2006 by r32 gts-turbo

[mad082]

could be different settings entered into the dyno. or his motor could be a bit healthier. also the lean afr's would've added a bit of power.

[Roy]

If thats at wide open throttle then save your money and put a new Bosch 040 fuel pump in there. Dont use a Walmart Walboro, dont use a 2nd hand GTR fuel pump, get something like a 040.

Odds are you will find the A/F are corrected back to the overly rich Jap tune, and you have saved your money because you havent had the remap done or SAFC bought and tuned

[JVP]

  paulr33 said:

yeah remap will get it spot on. should be a lot safer and might get some more midrange into it. if it is in fact 14 on max load you shouldnt be flogging it on the street.

i dont generally flog it anyways

might be going to sams tonite

im sure if he looks at the dyno graph he can see whats wrong

fuel pump is coming very soon

thanks for your help

keep it comming

[rob82]

There is no point getting it tuned with a f**ked fuel pump a chip or SAFC or whatever wont be able to get the fuel in if there is no fuel in the rail.

Discrepancies in power can sometimes be different aged AFM distorting the airflow signal, but mostly due to differnent dyno's.

[JVP]

i said id let sam look at first, then we will decide from there.

im not going to replace a pump if i dont need to.

been thru this shit b4 with ppl (not from here) saying its definatley this and that, when it turns out to be something else, you know what i mean?

[R31Nismoid]

When it turns out to be a fuel pump, or fuel related issue (filter)

Your faith should be restored in the expirienced people here... well... one can only hope.

[JVP]

nah i understand ash, but i just can go by word of mouth anymore

i know you are very knowledgeable and you know your shit, so im not denying that it could be a fuel pump.

im just going to take it to someone who knows his shit...

thanks ash

jabba

[konect]

You will go to get the remap done and Sam will say "you need a new fuel pump" even its not the problem (which it is). Take extra dollars just in case

[JVP]

one step ahead of ya lol

i am ringing sam when i finish work to make sure its cool to pop past tonite

ill keep yas posted

not denying its the fuel pump, which it could be, thats why its going to a professional

cheers

[R31Nismoid]

Did you ask ray to check the fuel pressure?

Or did you just get a run up to see what it was doin?

[khunjeng]

just do the fuel pump anyway and/or chnage the fuel filter at least....15 y.o and probably got the orig. fuel filter....filter should only cost u $20 to change - from memory its in a easy spot to change. funny enough it was a job I had planned for the w/e.

[JVP]

ok to everyone that said fuel pump, well done.

you guys are spot on. i never doubted you guys but i just wanted sam to check

its booked in for tonite to get the pump and ecu mod done.

ash, i booked it in for a dyno tune and power run. did the best he could.

happy with the power result, but not happy about the AFR's

so thanks with your help guys, appreciate it

cheers

jabba

[R31Nismoid]

what fuel pump?