1/4 Mile Question:

[Harey]

Hmm okay, i was led to believe (by mechanic) that its now running rich due to pump, he even offered to swap it back for stock one... maybe he wanted more work.

So why is my car running rich now with hi flow turbo, when it used to run slighly lean on stock fuel pump and stock turbo...?

The hiflow turbo will be using a completely different part of the tune. Without seeing which cells it is using and analysing that I am not sure what else can be done?

[adis]

QUOTE (adis @ 12 May 2010, 05:14 PM) Hmm okay, i was led to believe (by mechanic) that its now running rich due to pump, he even offered to swap it back for stock one... maybe he wanted more work.

So why is my car running rich now with hi flow turbo, when it used to run slighly lean on stock fuel pump and stock turbo...?

The only time you will see things become richer is if the pump you are taking out is dying and unable to meet demands.

Okay, thanks.

[HEKT1K]

So why is my car running rich now with hi flow turbo, when it used to run slighly lean on stock fuel pump and stock turbo...?

maybe your old fuel pump was rooted causing it to lean out. now with a decent pump it will be running richer

if you want better times, get an FMIC and some good tyres asap.

EDIT: beaten to it. but as said, if you're dead set on your current ECU, then sort out the other issues

[adis]

maybe your old fuel pump was rooted causing it to lean out. now with a decent pump it will be running richer

if you want better times, get an FMIC and some good tyres asap.

Yep, ill do that for now.

I dont want to get nistune now, because the turbo is capable of 260kw so i wanna upgrade injectors and z32 together with nistune. Im not financially ready for that now. But good to know.

[Harey]

What boost are you running on the hiflow? Have you tried dropping it down to a comparable amount of air to the stock turbo you were running before. Then you can prove that its the tune or something else.

[adis]

What boost are you running on the hiflow? Have you tried dropping it down to a comparable amount of air to the stock turbo you were running before. Then you can prove that its the tune or something else.

i ran 12psi, 14 and 17, all safe afr's.

[adis]

maybe your old fuel pump was rooted causing it to lean out. now with a decent pump it will be running richer

if you want better times, get an FMIC and some good tyres asap.

EDIT: beaten to it. but as said, if you're dead set on your current ECU, then sort out the other issues

Ye, for now ill stick with it and get cooler and better tyres.

After, i might upgrade the lot, ecu, injectors and z32.

So how bad is it to run around about 11 on AFR's? Obviously not ideal, just trying to understand...

[R31Nismoid]

I cant prove anything,

So how then are you in a position to make such a strong statement about someone who actually does have some?

[adis]

So how then are you in a position to make such a strong statement about someone who actually does have some?

When i compare the two dyno's, one has higher figure of KW with reasonably good AFR's still.

[paulr33]

mines tune is shit

11 afrs is no advantage just wasting efficiency, 12 afr is fine, even 13 af/r is fine - race pace style

[R31Nismoid]

When i compare the two dyno's, one has higher figure of KW with reasonably good AFR's still.

And as several users have told you now - AFR's are not the be all & end all.

[Harey]

i ran 12psi, 14 and 17, all safe afr's.

so they were all 11:1 afr?

[lookingforboost]

you dont need to have heaps of power to get a good run in, i ran a 13.9 in my R33 and it only has:

3" catback, pod, 9psi, walbro FP, stock ecu, side mount, stock dump

i was pretty happy seening i was running shitty old tyres

[Harey]

you dont need to have heaps of power to get a good run in, i ran a 13.9 in my R33 and it only has:

3" catback, pod, 9psi, walbro FP, stock ecu, side mount, stock dump

i was pretty happy seening i was running shitty old tyres

please post 60' and mph for an accurate comparison.

[adis]

so they were all 11:1 afr?

Yea, ever since i ran this new set up, pretty much, 11-11.5, no matter what boost i ran

[LANDSCRIBBLE]

Hi i have a simliar setup to you,

stock BOV

stock ECU

stock turbo

HKS EBC set to 12 psi

pod

trust m-spec fmic

splitfires

3.5in exhaust w/ screamer

highflow 3in xforce cat

walbro 255/L (500hp) intank fuel pump

denso spark plugs

on a dyno dynamics dyno it's done a 194kw or 261hp

ive yet to take it to the drags, but i wont expect too much, especially with my skinny little 225's on.

runs really rich, saving up for a vipec or powerfc atm..

[bubba]

This thread is hillarious!

[West]

Why bother when he just won't listen seriously !!!

[HEKT1K]

i think he's starting to come around... he agreed with me at least on the point of setting up the car better. and he's intending to go nistune at some point, so being a bit ignorant of the limitations of his mine's ECU isn't so important in the long run

[West]

Hi i have a simliar setup to you,

stock BOV

stock ECU

stock turbo

HKS EBC set to 12 psi

pod

trust m-spec fmic

splitfires

3.5in exhaust w/ screamer

highflow 3in xforce cat

walbro 255/L (500hp) intank fuel pump

denso spark plugs

on a dyno dynamics dyno it's done a 194kw or 261hp

ive yet to take it to the drags, but i wont expect too much, especially with my skinny little 225's on.

runs really rich, saving up for a vipec or powerfc atm..

I had a similar set up like you 8 years ago,

Small Supra front mount, stock bov, stock turbo, jap exhaust, boost to 12psi and i ran 13.6 at Calder on a slightly wet track with sumitomo 225/45/16 but that's because my 60ft time was 1.999 something.