whipple 304 tune

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

Postby Gampy » Thu Apr 08, 2021 5:59 am

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

Damn that's a nice clean shop ...
Feed the beast, the beast gets bigger, DON'T FEED THE BEAST!

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Re: whipple 304 tune

Postby VTXU8 » Mon Apr 12, 2021 9:24 pm

Dazza92VP wrote:haha yea it already got to the point the missus was starting to get pretty pissed off. this charger is a "bolt on kit" only thing that bolted on was the manifold and charger everything else was custom made to suit and he also changed from 4l60e to th400, lots of 1-2am finishes straight after work. now i have the wonder full job of tuning it as no one here either touches delco ecus or the ones that do dont want to touch an engine they didnt build and i havent done complete remap tunes only small tweaks to fueling and spark not starting from scratch but have to learn some how i suppose. were not going for outright power at this point he just wants to have it cruise with the charger whine and peel tyres


Contact Joe from ACE PERFORMANCE TUNING he has a lot of experience with Delco's and can do a good mail tune for you. He is on facebook and has his own website aceperformancetuning.com.au. He did a great road tune for me (i'm fortunate to live close to him) on my Whipple charged VT 5L. Will be taking it back to him for another tune soon as i have upgraded to a larger intake and MAF. Not sure where you live but he is located in Penrith NSW. Give him a go if you still need any help. He can post you a tune.

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Re: whipple 304 tune

Postby Dazza92VP » Fri Apr 30, 2021 3:18 am

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

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Re: whipple 304 tune

Postby Dazza92VP » Fri Apr 30, 2021 11:05 pm

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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Re: whipple 304 tune

Postby 'quipt4it » Sat May 01, 2021 8:55 am

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
Attachments
bubbles.jpg

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Re: whipple 304 tune

Postby Dazza92VP » Sat May 01, 2021 12:45 pm

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.

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Re: whipple 304 tune

Postby Dazza92VP » Sat May 01, 2021 12:46 pm

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?

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Re: whipple 304 tune

Postby 'quipt4it » Sat May 01, 2021 12:52 pm

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

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Re: whipple 304 tune

Postby Dazza92VP » Sat May 01, 2021 1:06 pm

I’ll give that a go then with both tables and report back thanks again

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Re: whipple 304 tune

Postby 'quipt4it » Sat May 01, 2021 1:58 pm

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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