Changing only injectors, advice on changes to tune for "no change" in operation

ciper · 07-04-2012, 07:52 AM

I am replacing the injectors on an 02 WRX. I would like advice on a quick way to modify the current tune to essentially make it function equal to before. I have the correct latencies but am curious what other items I may miss. The search engine is down and I am at the shop trying to button this up

Going from stock 02WRX blue top feeds to DeatschWerks 1000cc units. The intake will remain stock (hopefully little to no maf rescaling necessary).

I will take it to the tuner once the additional parts are installed but it needs to be safely drivable in the meantime.

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quazimoto · 07-04-2012, 09:09 AM

Input the latencies and they go by the smallest injector value on the flow sheet for injector scaling. You will have to adjust tip-in at a minimum. I would then check your fueling ranges and see if adjustments need to be made.

http://www.romraider.com/forum/viewt...jectors#p68338
http://www.romraider.com/forum/viewt...ning+injectors

ciper · 07-04-2012, 09:42 AM

Thanks a plenty. I felt like I was forgetting something but couldn't put my finger on it. I guess I must have been thinking about the tip-in.

Latencies are what the spec sheet says multiplied by .64 for open source right?

07-04-2012, 07:52 AM	#1
ciper Scooby Guru Member#: 15543 Join Date: Feb 2002 Location: san francisco, ca Vehicle: 90BJ Legacy LS ABS AWD 946 Rio Red Jpn built	Changing only injectors, advice on changes to tune for "no change" in operation I am replacing the injectors on an 02 WRX. I would like advice on a quick way to modify the current tune to essentially make it function equal to before. I have the correct latencies but am curious what other items I may miss. The search engine is down and I am at the shop trying to button this up Going from stock 02WRX blue top feeds to DeatschWerks 1000cc units. The intake will remain stock (hopefully little to no maf rescaling necessary). I will take it to the tuner once the additional parts are installed but it needs to be safely drivable in the meantime. * Registered users of the site do not see these ads. Last edited by ciper; 07-04-2012 at 08:07 AM.

07-04-2012, 09:09 AM	#2
quazimoto Scooby Guru Member#: 70395 Join Date: Sep 2004 Chapter/Region: MAIC Location: Da-boonies,Va	Input the latencies and they go by the smallest injector value on the flow sheet for injector scaling. You will have to adjust tip-in at a minimum. I would then check your fueling ranges and see if adjustments need to be made. http://www.romraider.com/forum/viewt...jectors#p68338 http://www.romraider.com/forum/viewt...ning+injectors Last edited by quazimoto; 07-04-2012 at 09:15 AM.

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07-04-2012, 09:42 AM	#3
ciper Scooby Guru Member#: 15543 Join Date: Feb 2002 Location: san francisco, ca Vehicle: 90BJ Legacy LS ABS AWD 946 Rio Red Jpn built	Thanks a plenty. I felt like I was forgetting something but couldn't put my finger on it. I guess I must have been thinking about the tip-in. Latencies are what the spec sheet says multiplied by .64 for open source right?