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03-13-2007, 09:46 PM | #37 | |
Break'em off some.
Drives: 07 Yaris LB, 04 Cobra Join Date: Jan 2007
Location: So Cal, OC
Posts: 854
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Quote:
Of course the more mods you do to the car, the more you will squeeze out with proper tuning. But saying with "certainty" that a piggyback is useless unless you have heavy modificatons simply isnt true. If a piggyback is the only option we have, then that is what we have to deal with. Obviously some are better than others, but there are some very good products out there. Ashley |
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03-13-2007, 09:47 PM | #38 | |
Drives: 07 Yaris LB, 70 Mach 1, 84 5.0 Join Date: Feb 2007
Location: Atl, GA
Posts: 139
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Quote:
I wasn't calling anyone names or making fun of anyone either, lets keep it real folks. |
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03-13-2007, 09:51 PM | #39 | |
Break'em off some.
Drives: 07 Yaris LB, 04 Cobra Join Date: Jan 2007
Location: So Cal, OC
Posts: 854
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Quote:
Ashley |
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03-13-2007, 09:56 PM | #40 | |
Drives: 07 Yaris LB, 70 Mach 1, 84 5.0 Join Date: Feb 2007
Location: Atl, GA
Posts: 139
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Quote:
I didn't mean to imply you couldn't make any gains with bolt-ons with this car, just that the gains you will get aren't worth it IMO. |
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03-13-2007, 10:04 PM | #41 | |
Break'em off some.
Drives: 07 Yaris LB, 04 Cobra Join Date: Jan 2007
Location: So Cal, OC
Posts: 854
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Quote:
There is something to be said for driving a well tuned car at ANY horsepower level. It just is more fun to drive, and when you get on it, it goes. You ask yourself why didn't the damn thing COME this way? Some piggybacks are better than others at dealing with "learning" ECUs but that is a very valid point. |
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03-13-2007, 10:04 PM | #42 | |
Resident Redneck
Drives: 07 Polar White Yaris Sedan 5M Join Date: Jul 2006
Location: Cumming, GA
Posts: 265
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Quote:
__________________
My other rides: 2003 Honda Civic LX Coupe 5M- S/C K24 w/ LSD coming soon! 1999 Honda Civic EX Coupe 5M w/ B18 powaa 1985 Toyota Celica GTS Coupe 5M- track whip http://www.importlounge.com |
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03-13-2007, 10:12 PM | #43 | |
Break'em off some.
Drives: 07 Yaris LB, 04 Cobra Join Date: Jan 2007
Location: So Cal, OC
Posts: 854
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Quote:
Weather its piggyback or a reflash, it is all just means to an end and picking the product that will work the best for your application. Ashley |
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03-13-2007, 10:19 PM | #44 | |
Drives: Polar White Hatch Join Date: Nov 2006
Location: chicago
Posts: 407
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Quote:
Now I will go on the assumption that you threw out an arbitrary number. If you could guarantee that you would see appreciable gains from headers,intakes and pulleys it might be worthwhile. Here are the problems. Header- The stocker is already a decent looking tubular piece and the aftermarket options look identical in design so I cannot imagine much if any gains in HP. Cat-Your not going to gain anything here since all stock cats flow well. Pulley- The ones I have seen are the same diameter as stock. The only difference is weight. Exhaust pipe size probably isn't restrictive at near stock power levels.
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ChinoCharles Intake supporter. |
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03-13-2007, 10:29 PM | #45 | |
Drives: 07 Yaris LB, 70 Mach 1, 84 5.0 Join Date: Feb 2007
Location: Atl, GA
Posts: 139
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Quote:
One other thing for people to remember is the possible loss of low end power. Opening up the intake and exhaust fully could really hurt the area under the curve. Again, gotta wait until people start doing the mods. |
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03-13-2007, 10:59 PM | #46 |
Drives: Polar White Hatch Join Date: Nov 2006
Location: chicago
Posts: 407
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ChinoCharles, Did you ever get a chance to re-dyno that header you put on?
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ChinoCharles Intake supporter. |
03-13-2007, 11:00 PM | #47 |
Drives: 07 Yaris LB, 70 Mach 1, 84 5.0 Join Date: Feb 2007
Location: Atl, GA
Posts: 139
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03-13-2007, 11:11 PM | #48 | |
Break'em off some.
Drives: 07 Yaris LB, 04 Cobra Join Date: Jan 2007
Location: So Cal, OC
Posts: 854
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Quote:
The net gain may end up being closer to 20 WHP when all is said and done, but 20-30 is a good estimate. It is tuning that is what will make the other parts really work well. Just slapping everything on will see a 10-15 Hp gain, vs tuning for all the addtional parts. I agree that the stock manifold is decent. I don't think the Megan piece will be the best alternative as time goes on. I'm not spending any $$ for anything that isn't 4-2-1 and\or has longer primaries, so I'm staying stock for now. A good high flow cat will gain a bit more power vs the 2 stock cats. It a simple way to gain a couple HP. OEM cats don't flow as well and are in the worst possible place. Make no mistake, I'm not saying increase exhaust pipe diameter, just add in a good cat and straight through muffler and you will see gains. It is easier to fab up an entire new header back system than cut and paste in the new components. Lighter pulleys will free up horsepower even if they are the same diameter as stock. it is just liek running lighter wheels. Any savings in rotating weight is huge. Ashley |
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03-13-2007, 11:14 PM | #49 | |
Break'em off some.
Drives: 07 Yaris LB, 04 Cobra Join Date: Jan 2007
Location: So Cal, OC
Posts: 854
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Quote:
As far as exhaust goes, unless you are putting on a power adder, you shouldn't be going any bigger than 2.25 inches for tubing diameter. Anything bigger than that an you will definately be sacraficing bottom end. |
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03-14-2007, 12:58 AM | #50 |
Banned
Drives: LB Join Date: Jul 2006
Location: OH
Posts: 7,787
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Wow, this thread is on
Did I re-dyno the header... yes. It also happened to have a pulley and an intake on there, but I did it! With a stock exhaust bolted to the Megan intake, you lose power down low to make power at the top end. I am reserving judgement on it until I have the rest of the exhaust. Ashleys estimates and comments are spot on with both what I see on the graphs and what I'm being told by my dyno tech. And Moose, don't take it personally. I get frustrated with the naysaying but I respect your opinion. I know you've done this before. |
02-22-2010, 03:51 AM | #51 |
I've made a post!
Drives: Suzuki GSX-R Join Date: Feb 2010
Location: UAE
Posts: 1
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Guys i need your advice! I don't have lots of cash to buy big cars wich i preffer the most (Supra,Skyline,Impreza WRX sti) and i got the idea of buying a small car and slowly upgrade it. I was thinking to start with a cheap Yaris. But from what i read here it's a pain in the butt ..tuning it ..and not lots of HP.Is its really that hard to upgrade it?Don't have much of a budget here..or should i go for a Fiat Punto.Any advice is welcomed... thanx
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02-22-2010, 12:41 PM | #52 |
What?
Drives: 2007 Yaris LB Join Date: Nov 2008
Location: Safety Harbor, FL
Posts: 1,006
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Advice: Start a new topic instead of dredging up one that's over 3 years old.
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02-22-2010, 01:34 PM | #53 |
ULTIMATE
Drives: 07 Yaris Turbo Join Date: May 2007
Location: Canoga Park, CA
Posts: 14,859
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Why start a new one? Read through it, it's completely relevant to a current discussion.
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Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific. |
02-22-2010, 03:33 PM | #54 |
What?
Drives: 2007 Yaris LB Join Date: Nov 2008
Location: Safety Harbor, FL
Posts: 1,006
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Partially relevant, yes. But personal advice on "what car should I buy" is very different from "what kind of development is being done on the Yaris".
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