whipple 304 tune

Holden/Delco Tuning. ALDL, OBD 1.5. Circa 1989 to 2004.
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Gampy
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Re: whipple 304 tune

Post by Gampy »

It should ... Just takes money, seems to be no shortage there!

Damn that's a nice clean shop ...
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VTXU8
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Re: whipple 304 tune

Post by VTXU8 »

Re: whipple 304 tune
Last edited by VTXU8 on Wed Apr 19, 2023 3:47 pm, edited 1 time in total.
Dazza92VP
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cars: 92 VP V8 Wagon
Location: Perth

Re: whipple 304 tune

Post by Dazza92VP »

Turns out the supposed 630cc injectors are a bit smaller than they should be although the part number says they are 630cc (fl114962) ened up turning on double fire back on jacking up the injector rate by almost double and now the ve table is in the 60 to 70% ve off boost. We can now rev it to 4500rpm and target fuel ratio only one point away on the rich side. I’ll post up the little log and the tune so far later on this morning. Only thing that worries me is that it’s sort of a fudge on the injector rating and I’m not to sure I’m what range my ve table is supposed to be in
Dazza92VP
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cars: 92 VP V8 Wagon
Location: Perth

Re: whipple 304 tune

Post by Dazza92VP »

log and new ve map i've tweaked the ve after this log just need to start putting a bit of load on it to push it outside the 40, 50, 60kpa areas kind of just guessed at the ve above these areas but have hopefully gone a little on the richer side of things
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ve check.xdl
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OSE $12P V112 2bar V8 808 with intercooler control & kickdown control.BIN
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'quipt4it
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Re: whipple 304 tune

Post by 'quipt4it »

You really gave that VE Table the workout lol.
The lean spike on backing out of the throttle may be helped by adding in some DE Gain vs Delta manifold fuel.
Adding some timing in the highlighted areas of the Main Spark table will also help with the transition when coming off the throttle.
The bubble trace sweeps in an arc right on those MAP RPM areas.
Yes you were definitely too low with your previous Inj. Displ/ Flow rate. 0.0501 is definitely closer to the 0.047 the calculation shows.
That injector # looks to be from a dubious source (especially given the price). I would get them flow tested to see how they perform.
They also have mixed reviews...https://www.amazon.com/Siemens-Deka-Imp ... merReviews
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bubbles.jpg
Dazza92VP
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cars: 92 VP V8 Wagon
Location: Perth

Re: whipple 304 tune

Post by Dazza92VP »

haha yea was sitting the for a few hours just watching and changing was starting to go cross eyed looking at numbers but thanks mate for having a look at it. I've added a degree of timing in those areas highlighted will see how it reacts to it but I'm unsure of how the de gain table works so i haven't adjusted that yet. mate happier than ever already as its already reving better and not fumigating the house im hoping to get back over there this weekend and have another crack at it.
Dazza92VP
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Joined: Sun Jun 06, 2010 9:59 am
cars: 92 VP V8 Wagon
Location: Perth

Re: whipple 304 tune

Post by Dazza92VP »

as for the injector rate every time i used the flow calc spread sheet those injectors came up as 0.03 maybe i was punching it in wrong?
'quipt4it
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Joined: Sun Oct 28, 2012 12:57 pm

Re: whipple 304 tune

Post by 'quipt4it »

It does sound like you are making progress.
I would add more than 1 degree timing in those areas. Start with three with a thought to lift even further.
The DE Gain are small figures. Add in, say 0.02 (which is a fairly large %), and see how it goes.
Definitely something wrong with your Disp. Inj./ Flow calcs...
To amend the above info, the Disp. Inj/ Flow is 0.041 for 304 ci
Attachments
gas.jpg
Dazza92VP
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Joined: Sun Jun 06, 2010 9:59 am
cars: 92 VP V8 Wagon
Location: Perth

Re: whipple 304 tune

Post by Dazza92VP »

I’ll give that a go then with both tables and report back thanks again
'quipt4it
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Joined: Sun Oct 28, 2012 12:57 pm

Re: whipple 304 tune

Post by 'quipt4it »

Dazza92VP wrote: ....it is a standard pump i do have a walbro 255Lph pump if needed?
Do install the pump. Even though you are probably not seeing the need for it in the light throttle areas you are tuning now, you will need it for the business end of the tune.
Plus it will save needing to touch the tune up again in those areas you are tuning now.
You really weren't that far off with your Fuel Calc. anyway (@ 0.0399). The thing is, the injectors are the unknown here....
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