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robains · 09-27-2008, 09:56 AM

What is the "other" site?

Stinky - agree with you, BUT be aware dyno time isn't free either. I don't know what CharlieX charges for reflashes so I can't compare cost to dyno vs. cost to ship and reflash.

My plan is to get a good baseline dyno tune from Kris and if I have to pay extra to learn what he is doing while he is doing it, then I will. I've installed and/or am installing a bunch of additional sensors (wideband, EGT, IAT, Boost, etc.) that I hope I can effectively use to adjust my car over time and keep it safe while making good power (hell, if I have to I'll even keep fuel "specific gravity" maps).

Where I differ from Phil and others, is that I don't plan to keep doing dyno tunes every time I make changes to the car unless they are drastic (as in new built motor). For example I plan to install this header in the future and plan to tune without a visit to the dyno. Heck, if I have to, I'll find an empty stretch of road to do 4th and/or 5th gear pull. I prefer using real world because dyno's don't emulate the wind forces that are also putting a considerable amount of load on the car and in my case can't emulate the volume of air being pushed over the IC.

Knowledge and sharing of MAPs is a good thing especially if one's engine package is very similar. I can't really use Phil's MAPs because his current setup is too different (no Cat, not DBW, doesn't have FF air intake, etc.), but I could look at his maps and ask him what changed over time and learn from that.

Seeing as folks can get perfect safe tunes with EFI, that tells me it can be done and there is no "weakness" in using EFI. In fact, it should ultimately be the coolest thing since sliced bread, even for a relative EFI noob like myself.

But I do encourage you read up on EFI and specifically on how VVT works in these 2ZZ motors. After taking my motor apart and reading the Service Manual (they have a good section on VVT) and actually seeing the parts and the very trick/cool way they work, it does help give some background on how to make EFI work also. This 2ZZ is actually a pretty darn nice motor from Yamaha -- my only wish is that they made it a 2.2 litre not a 1.8 litre.

Rob

09-27-2008, 09:56 AM	#37 (permalink)
robains 2007 Exige S Join Date: Jul 2007 Location: CA, Bay Area Posts: 1,820	What is the "other" site? Stinky - agree with you, BUT be aware dyno time isn't free either. I don't know what CharlieX charges for reflashes so I can't compare cost to dyno vs. cost to ship and reflash. My plan is to get a good baseline dyno tune from Kris and if I have to pay extra to learn what he is doing while he is doing it, then I will. I've installed and/or am installing a bunch of additional sensors (wideband, EGT, IAT, Boost, etc.) that I hope I can effectively use to adjust my car over time and keep it safe while making good power (hell, if I have to I'll even keep fuel "specific gravity" maps). Where I differ from Phil and others, is that I don't plan to keep doing dyno tunes every time I make changes to the car unless they are drastic (as in new built motor). For example I plan to install this header in the future and plan to tune without a visit to the dyno. Heck, if I have to, I'll find an empty stretch of road to do 4th and/or 5th gear pull. I prefer using real world because dyno's don't emulate the wind forces that are also putting a considerable amount of load on the car and in my case can't emulate the volume of air being pushed over the IC. Knowledge and sharing of MAPs is a good thing especially if one's engine package is very similar. I can't really use Phil's MAPs because his current setup is too different (no Cat, not DBW, doesn't have FF air intake, etc.), but I could look at his maps and ask him what changed over time and learn from that. Seeing as folks can get perfect safe tunes with EFI, that tells me it can be done and there is no "weakness" in using EFI. In fact, it should ultimately be the coolest thing since sliced bread, even for a relative EFI noob like myself. But I do encourage you read up on EFI and specifically on how VVT works in these 2ZZ motors. After taking my motor apart and reading the Service Manual (they have a good section on VVT) and actually seeing the parts and the very trick/cool way they work, it does help give some background on how to make EFI work also. This 2ZZ is actually a pretty darn nice motor from Yamaha -- my only wish is that they made it a 2.2 litre not a 1.8 litre. Rob __________________ '07 Exige S (Track Pack & LSD) + EFi 550ci injectors + Mahle 9:1 + DRS Port + SuperTech Valves + Weapon R Header + 2.9" pully + TODA Clutch + FF Engine Damper + RLS IC + Greddy catch cans + opened roof slot + RTD brace + Milled steering arms + Larini 8" + FF air intake + Moroso oil pan + Ultradisc 2 piece front/rear + Reverie 1650mm wing + ReVerie front splitter + IQ3 Dash + 4pt ASM + Pioneer AVIC-N2 nav + rear camera + RAC monolites 888s 195/225 + Lotus LSS Hoosier R6 205/225 @ 1921 lbs Last edited by robains : 09-27-2008 at 10:17 AM.