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Old 22 June 2004, 18:09   #1
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Suzuki DF90 power increase

I have a technical question.......

Having just purchased a new Suzuki DF 90 outboard I decided to read the manual..... Thats strange in itself, However I did discover that the DF90 is exactlly the same engine in terms of CC (1950) as the DF115.
The only difference being that the DF90 tops out at 5500 rpm and the DF115 tops out at 6000 rpm.

Therefore would anyone have any information on both the power and torque curves on both engines and is the extra 25HP obtained solely through the higher revs....

Also if this is the case is there anyway to get a software upgrade (ie new engine map ) for the ECU ????? as is the availabilty in the car tuning world...

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Gazza
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Old 23 June 2004, 02:46   #2
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I spoke to a Suzzy main dealer who told me (and i do actually believe him) that the difference is down to different engine management software and a different camshaft. A similar principle applies to most cars as well I think.
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Old 23 June 2004, 06:44   #3
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Would confirm that. Spoke to the Suzuki man at Ribex who said that was the case.
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Old 23 June 2004, 15:41   #4
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Thanks for the info guys.......

Certainly is food for thought............


I mean a cams not hard to change, but would they be able to re-program the software???????


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Gazza
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Old 23 June 2004, 16:39   #5
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I looked into this and the short answer was 'no'.

The long answer was yes it is possible but no one will do it.
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Old 24 June 2004, 09:15   #6
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Quote:
Originally Posted by simmons0
I looked into this and the short answer was 'no'.

The long answer was yes it is possible but no one will do it.
Surely there must be some enterprising engine tuner out there who could make a mint from offering an instant power increase.

I know there are a couple of companies out there that just reprogram engine ECU's, and this is achieved by uploading a performance map.....

The whole process only takes 10 mins and has a perfound effect on performance...

i.e Revo will re-map an Audi TT from 225 bhp to 265 bhp in 10 mins and with no bolt on goodies....

All they do is re program the ECU......

Worth considering....

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Gazza
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Old 24 June 2004, 09:28   #7
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Don't think it would do a lot for your warranty though. Also, insurance co may be very interested (not) if you had a claim.
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Old 24 June 2004, 16:35   #8
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Quote:
Originally Posted by Ribald
Don't think it would do a lot for your warranty though. Also, insurance co may be very interested (not) if you had a claim.
I guess no one would ever know, its not like the engine number has changed or any other physical aspect......

I know this happens a lot on cars and in fact one system allows you to swap back to the original ECU program....

Gazza
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Old 24 June 2004, 17:16   #9
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The game's up, sonny!

Quote:
Originally Posted by Gazza
I guess no one would ever know, its not like the engine number has changed or any other physical aspect......
You would be surprised to learn who looks at these forums though!
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Old 24 June 2004, 17:43   #10
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Quote:
Originally Posted by Loss Adjuster
You would be surprised to learn who looks at these forums though!

Sorry....

but your wrong......

Under the latest european legisaltion it would be up to the manufacture to prove that the modification had caused a problem.......

And given that the 90 and 115 are identicle engines, they would struggle to do so.......

The minimum 24 month warranty is now considered to be far more binding that in previous years ......
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