The Official Normally-Aspirated Thread....(techniques/parts/troubleshooting etc.)
Member
Joined: Nov 2009
Posts: 55
From: socal
we do what we can with what we have. all you can do is bolt ons and some tranny work if you got the cash the. i have noticed alot since all the work i have done on my car. all bolt ons and bolt ins. but way different than stock. esspecially after the pullies, clutch and ripping out the inside of the car. but not many willing to do that to their car.
Push My Button
Joined: May 2007
Posts: 4,997
From: Calgary, Alberta
Cool to see this thread still going... this motor has got to be one of the stingiest motors I have ever come across for bolt on power.
I should really throw mine on another dyno to see how it does... not that I didn't try half a dozen shops last year... stupid Calgary.
I should really throw mine on another dyno to see how it does... not that I didn't try half a dozen shops last year... stupid Calgary.
Last edited by Sugarphreak; Apr 5, 2010 at 11:08 PM.
Member
Joined: Feb 2010
Posts: 49
From: Syd, Australia
what gapping do i need on the spark plug?
On the 16 valves L15A, IK22 plugs (or IK20) provides better power because they are shorter then the stockers. Unfortunately, i can't say if stock plugs are limiting power for the 8 valves I-dsi engine!
As for IK20 plugs Vs. IK22... You should'nt feel more power with IK22 plugs as it's only the plug heat range!! For a near stock N\A engine, i think IK20 plugs should be better suited but i didn't tested 'em personately!!
Marko!
As for IK20 plugs Vs. IK22... You should'nt feel more power with IK22 plugs as it's only the plug heat range!! For a near stock N\A engine, i think IK20 plugs should be better suited but i didn't tested 'em personately!!
Marko!
Another important thing to consider when tuning the L15 is that it was originally concieved for thrift, not sport. The power that is there with bolt ons needs to be accessed. Adding a throttle controller to get around the OE spec thrift programming language can make a big difference in the perceived power gained from bolt ons. That and realize that 5-10 HP is pretty big when you figure that you only had 100 to begin with LOL......
Its not a good idea to change the pulley, the oem crank pulley itself is a harmonic damper, it absorbs shock & vibration.
Manage and optimize ignition timing
Sorry for my "newbyness",
I am NA, AFAIK w/o going FI "sw" tuning is essentially advance timing. I thought that AEM F/IC would tick the bill, until I found it can only delay timing (marketing, oh marketing).
Are you aware of any other possible AEM solution? AFAIK Greddy Ultimate can advance timing but it's more expensive and doesn't have all the features sported by AEM, plus it needs special harnesses and sw not included...
TIA,
I am NA, AFAIK w/o going FI "sw" tuning is essentially advance timing. I thought that AEM F/IC would tick the bill, until I found it can only delay timing (marketing, oh marketing).
Are you aware of any other possible AEM solution? AFAIK Greddy Ultimate can advance timing but it's more expensive and doesn't have all the features sported by AEM, plus it needs special harnesses and sw not included...
TIA,
Last edited by jazzista; Apr 27, 2010 at 09:09 AM.
Be careful when fiddling with timing, you really should have some supporting mods before going that route. Just advancing timing won't really net much without at least a modest bump in compression/intake/exhaust work.
I'm not sure what you mean by "hw" and "sw" forgive me. +7hp sounds reasonable for a timing bump in addition to existing mods. Were those numbers generated solely by advancing timing? If so, that is damned impressive.....
Lol, yes Marko! you won, sorry for my bad jargon.
The link of the tuner I was referring to is: ... DIGITAL MOTOR ... © 2004 by roberto.luini@tin.it ..., then select CATALOGO, then Honda Jazz. They have a good reputation here, as they are supposed not to "inflate" figures. I've asked and they are open to tune also on existing mods.
If I don't find a cheaper DIY option (greddy seems more expensive, AEM F/IC would be fine only if going FI), I would try them after hardware mods.
Ciao,
The link of the tuner I was referring to is: ... DIGITAL MOTOR ... © 2004 by roberto.luini@tin.it ..., then select CATALOGO, then Honda Jazz. They have a good reputation here, as they are supposed not to "inflate" figures. I've asked and they are open to tune also on existing mods.
If I don't find a cheaper DIY option (greddy seems more expensive, AEM F/IC would be fine only if going FI), I would try them after hardware mods.
Ciao,
i love mine !
Pure bang for the buck i have to agree with Felixy. The TC "wakes up" the L15, most noticeably in higher gears. Although the light flywheel and final drive would have the same effect they cost quite a bit more.
Member
Joined: Sep 2008
Posts: 622
From: Québec city
But as for the ''Best Bang for the bucs'' thingie, i would say spark plugs.... 40$ for 2 - 3 HP is near 10$\1Hp.... What a bargain!!
Marko!!
Last edited by DOHCtor; May 11, 2010 at 09:46 PM.