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imaparana

Lupo GTI Rally car project

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Update:

Some engine mods have been on the cards for a while now, with the jersey rally (main event of the year) being cancelled due to Covid now has been the ideal time to start this.

In the hunt for more power, i decided to bite the bullet and go standalone ECU as no one on island can map the factory ecu. Aswell as doing an AVY/AFH Hybrid built (very basic)

I managed to pick up a 6n polo 16v for a donor head (AFH) which would form the base of the upgrade.

3096715-D-0322-450-B-9-FAB-C3-FA9-DB0-DE 

7-E1-C3667-4-CF1-4124-AE60-0-B8816257-A8

I rebuilt the head which was pretty minging for a 40k miles car, and stuck it on the stock bottom end. And ran it on the stock management in order to bed the cams in.

DF69-ACED-01-A2-451-B-A1-D9-0-E020-B7284

9-CBF3324-754-D-48-B5-967-B-F5-A72370-D4

Once all was bedded in i started on the Standalone conversion

I went for a ME221 motorsport electronic ecu which has alot of features of expensive ecu's for a lower price point. I then spent a good few days making an engine harness for it. Keeping the stock ecu to run the clocks (minus the rev gauge)

E3258-DF5-29-C7-4-ABB-8-C82-C6-F4-F13-FC

With the new ecu wired up it was a case of putting it all together, injection is by the way of gsxr600 itb's on a danst intake manifold.

F1584-C1-C-293-B-4521-A4-AD-567787-ECBA7

with a few tweeks to the basemap it fires up and idles sweet, with the lovely itb soundtrack. Also fitted in a aem wideband gauge to get the idle safe before the dyno session, aswell as an oil pressure light on a higher pressure switch. this had to be wired up separately to the factory light as having the engine run on the standalone, the factory ecu doesnt like to see oil pressure when it thinks its not running.

59096-AC4-1-BB5-4278-AB5-E-08171662148-E

The rolling road day is in 2 weeks time, a week before the next event so fingers crossed for no dyno day hickups

Edited by imaparana
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Nice work - how did you choose trumpet length or did Danst advise?

I missed all the brake chat before - I can see the ABS is away, are you now on a pedal box with master cylinders front and rear?

Last Q - what's that caged shell lurking under the loom table?

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3 hours ago, LR5V said:

Nice work - how did you choose trumpet length or did Danst advise?

I missed all the brake chat before - I can see the ABS is away, are you now on a pedal box with master cylinders front and rear?

Last Q - what's that caged shell lurking under the loom table?

I went for the biggest i could get really, Danst said they fitted 50mm on a lupo before, the other option from them was 90mm, i went with 75mm from somewhere else and just waiting on a pipercross filter to go over them.

Yup abs is gone, running the stock pedal box which needed abit of fettling to fit the cable pedal. i have a bias valve in the line to the rear brakes

Its a friends subaru GC8, ive been in his garage while faffing around with wiring

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Dyno day went well, minor hickups with the throttle cable/linkage which needs sorting before the next event, aswell as some venting to the ITBS as the intake temps were skyhigh 35+throughout the run.

Despite this it made a healthy 163.9 bhp & 134ftlbs of torque, Torque has moved up the rev range from the VVT setup before which is to be expected. More is likely to be gained from an aftermarket manifold but will keep the stock one for now.

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Good solid result - how high have you made you rev limit? - mine just wanted to keep going past 7K, no sign of power drop off till very rude hard limit at 7.6

 

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9 hours ago, LR5V said:

Good solid result - how high have you made you rev limit? - mine just wanted to keep going past 7K, no sign of power drop off till very rude hard limit at 7.6

 

its got a soft cut around 7650, peak power is just after 7k :) 

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That is really screaming. What sort of ignition advance is there at 7k? And how early do you start injection? And you must be using huge injectors to have enough time to inject enough fuel at those revs? And how's it idle? Lots of Q's...!

Nice 👍🏻

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2 minutes ago, mk2 said:

That is really screaming. What sort of ignition advance is there at 7k? And how early do you start injection? And you must be using huge injectors to have enough time to inject enough fuel at those revs? And how's it idle? Lots of Q's...!

Nice 👍🏻

ill have a look at the map and get back to you on the complex questions, 

Injectors are the stock gsxr600 ones which i think are 240cc, but are at 80% duty so any more power and would probably need some bigger ones

idle isnt too bad now ive balanced the itb's, its been raised to 1000 ish as itd try and die when the fan comes on or i turn the wheel at idle which loads the engine

ill post a picture of the graph when i get a chance

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You must be running like half a millisecond pulses at idle. Or higher fuel rails pressure? I love this stuff! Great!

Hey, I just thought, have you considered upping the compression ratio (deep head skim- like a couple of mm)?

late edit: misread your post. Stock injectors means probably 1.5ms...

Edited by mk2
I don't read.

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1 hour ago, mk2 said:

You must be running like half a millisecond pulses at idle. Or higher fuel rails pressure? I love this stuff! Great!

Hey, I just thought, have you considered upping the compression ratio (deep head skim- like a couple of mm)?

late edit: misread your post. Stock injectors means probably 1.5ms...

I had thought about getting it skimmed and ported while it was off the polo but nowhere locally really does that sort of stuff

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