Roomster 1.9 Tdi modifications

[Julian Edgar]

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Part 4 in the series

[Julian Edgar]

I find the acceleration figures a bit hard to swallow, times in seconds would be better, 76% reeeeaaaalllllyyyyyyyyy? hard figures 0 to anything would be better. Is Mister Besanko still in business?

Measuring the instantaneous accelerations at different rpm, as has been done in the article (and in fact throughout the series), is far more illuminating than normal measurement of acceleration times in seconds (eg a 0-100) because it shows exactly where in the engine rev range gains or losses are being made. *

The acceleration at the redline is indeed 76 per cent stronger than it was previously. In standard form there was no point in going to the redline as the performance was dropping off so rapidly. Now the redline is the appropriate max acceleration change rpm.

Re Wayne Besanko and PowerChip - I assume so, why don't you ask him? The results the company achieved on my car were exceptional.

(* and the gains and losses are being measured on the road under real-world conditions)

[Julian Edgar]

Best get it out there and do some real road acceleration figures.

As explained in the series, the acceleration testing was measured directly on the road. The dyno was used for tuning.

As you yourself said the OS guys have been at it for years so what was the object of the exercise?

To tune the car? I don't understand your point. The object of the exercise was to give the car better power and economy, by means of a reflash. That was achieved, with far better results than I expected. As clearly declared in the story, the Powerchip reflash was made at no charge.

So how about taking all the other tuning chips/tunes and trying them and then give us some comparative results.

Why? I didn't compare two or three different intakes. I didn't compare two of three different rear mufflers. (And, in the last part in the series, I don't compare two or three different intercoolers.) Instead, I carried out one modification in each area, and was pleased with the results. I didn't say that the Powerchip tune was better than other possibilities (how could I know?); I said the results were excellent.

[Jarred]

autospeed isn't motor magazine. Write to them and ask them to do a tune test!

Keep it up Julian, always interested to have a read of the stuff you're doing.

[Transporter]

autospeed isn't motor magazine. Write to them and ask them to do a tune test!

Keep it up Julian, always interested to have a read of the stuff you're doing.

+1 here as well. Much better than arguing whose chip or tune is better.

[Greg Roles]

If it wasn't for Julian, I wouldn't be half the tinkerer I am today. Rock on dude!

[Ozsko]

If it wasn't for Julian, I wouldn't be half the tinkerer I am today. Rock on dude!

A tinkerer who gives advice with no qualifications? There is a minefield I would not like to be in.

[Julian Edgar]

I still don't get why you went down this path

Oh well, as the series is very popular and the reader ratings are high, it seems lots of people DO understand why I went down the path... and they like it.

[Greg Roles]

A tinkerer who gives advice with no qualifications? There is a minefield I would not like to be in.

Guess you won't be PM'ing me for advice then?

[Transporter]

A tinkerer who gives advice with no qualifications? There is a minefield I would not like to be in.

And who exactly you're? (just asking).
Your profile doesn't reveal anything, so until you upgrade your profile with your qualifications and/or what you work as, I will delete all your posts that are a similar nature as the ones above.
The reason behind is simple, there are many in the forum that don't know much about the cars and they will get confused, that someone who introduced himself and shows what he does for living get questioned by some one with no qualification (you) at all. Don't you think?

[noone]

Nice thread. I don't think you have to be qualified to give advice, that's why it's advice and not a paid service. It's up to you how you treat that advice.

Just a quick comment on brakes, for my Polo GTI with same brakes, Bendix ultimate are quiet and very bitey. I wouldn't want to track them, but for daily driving, they are very nice. If still available, about $40 on eBay from local seller.

[Julian Edgar]

Roomster 1.9 TDI modifications

Part 5 - the last part in the series - is up: Browser Warning

[brad]

interesting stuff.

It makes me wonder if the tune should be tweaked after the intercooler upgrade?

[kaanage]

Part 5 - the last part in the series - is up: Browser Warning

Any chance you can provide an update after remapping to allow for the larger intercooler? I assume that you won't leave it in the slightly detuned state (which is probably helping reduce the fuel consumption).

It makes me wonder if the tune should be tweaked after the intercooler upgrade?

I certainly think it should, especially as the intercooler is probably the most difficult modification to implement. But I see it as having the most potential for performance improvement apart from the remap itself.

And I really have to wonder how much improvement there would have been vs stock if the car had been remapped and no other mods done. I suspect it wouldn't be much worse than what was achieved in Stage 4.

[Julian Edgar]

Any chance you can provide an update after remapping to allow for the larger intercooler? I assume that you won't leave it in the slightly detuned state (which is probably helping reduce the fuel consumption).

I am not intending to do any further work on engine performance.