New Toys (ITB's)

[Joel]

[QUOTE=harwood39]its not due to the o2 sensor, its because you have to bypass the map and use a TPS based fuel map. ITB's have a lot less vacuum below 5k than plenum style manifolds have so the map doesnt read sufficeint vacuum compared to what other sensors say and it picks wrong fuel tables. If you just bypass it and use tps based tables, you have really bad gas milage for dailiy driving[/QUOTE=harwood39] last time i checked ITB's aren't made for daily driven use. but if you plan on doing it... swap your ecu's, and run something that works for daily driving. and then buy another ecu with crome or uber data on it.

[stephen bradley]

good luck ya big pimp you.

[darkelvis]

harwood39 wrote:
If you just bypass it and use tps based tables, you have really bad gas milage for daily driving.

That is why you tune your maps. If you tune them to 14.7 low load through 13.2 heavy load your gas mileage won't change.

[Joel]

"hail to the sled god" er i mean, d series god(if thats a title worth mentioning)haha jk

[Guest]

This is prolly a good example why it is easier to go boosted.

[Guest]

This post is deleted!

[PSI2HI]

Im doing a lot of airflow testing right now w/ Z6 and Y8 heads an intake manifolds as im working on building sheetmetal intake and doing some head work on them. The stock Y8 intake manifold will flow enough cfm to not start choking down the power until 7500 rpm(based off a 250hp car). Based on those #'s alone there's no way your maxing out airflow of the stock intake running a stock compression/cam SOHC, let alone reving to the stock limiter.

[harwood39]

so now why does every one think im in over my head? The hardest part will be tuning.

oh ya, and im not doing this because i am maxing out my stock intake mani, im doing it for the throttle response and HP numbers.

[Guest]

harwood39 wrote:
so now why does every one think im in over my head? The hardest part will be tuning.

This is true....but the hardest part is always tuning....ITB's (I'd imagine, don't know for sure) almost have to be harder to tune than a single TB. Just my thoughts.

[harwood39]

oh, and i forgot to mention that when they were on groshongs hatch they run fine untuned, they just idled choppy but at WOT they were fine.

oh and ITB's are harder to tune due to the fact that they all need to be adjusted individually also just like a carb.

[integra_gsr98]

It's ok, they will be for sale in a week when he wants a new project anyways!

[harwood39]

^^^ nice try but now they wont.

[bluejays]

what brand are they? i'm guessing not toda.

[pin]

They're from a Suzuki GSX-R motorcycle. http://www.homemadeturbo.com/tech_projects/itb/

[MazdaMP3ShiftR]

put thos on and race me!!! sohc vs sohc

[harwood39]

Wont be on til next summer guys due to tuning issues i would have. and i would also want to dyno tune it once i get a good EMS.