Cannot Tune With Perrin Modified Injectors?

[Hayaboosted]

Alright.. so I have a friend who is upgrading his turbo to the FP Green setup. Well we recently went through Perrins program where they modify your injectors to flow xx amount of cc's. Well when I call to get a dyno time and to get the ecu reflashed so we can drive it to where we were planning on going to have it tuned. They told us that they do not like tuning to modifed injectors. And told us it could take three hours to dyno tune with them. And that we should switch to a standard injector that is made to flow the 820cc needed. He told me also that it wouldnt run as good with them and we wouldnt get the maxiumum from the tune with the modified injectors. Is this guy full of crap and I should find a diffrent tuner?

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[CK02WRX]

Many of the good tuners that post on this board have tuned the Perrin mods with great success. A few people have had them tested by RC with good results. A few people say its a bad idea, but more say its okay. RC cleans, inspects, tests, and sell injectors so I'll take there word for it. Just to let you know, I don't run the Perrin mods because they weren't an option a year and a half ago when I bought PE650's for $600. I would find a tuner that has tuned them before that way he'll have a map that's close instead of starting from scratch. It might save you a little. Search or go to your regional forum and ask for a good tuner in your area. (for whichever EM you have or want)

[bboy]

Having spent the better part of today investigating this modification, I'd say the answer is we don't know how cutting the screen off affects the injector. One injector expert thought it might reduce the life of the injector, then there is the omnipresent cry that the spray pattern is different, and yet a third objection that fuel atomization is compromised.

Everyone who has flow tested and spray pattern test the Perrins has said they are fine. Screens are a relatively new phenomena that I have heard has to do with emissions, not power to general function.

BTW, I think your dyno guy is lame. The flow is 810-820 cc/min at 80% duty and 43.5 psi, that's all they need to know. "son, I says, it's called scaling, it is"-- Foghorn Leg Horn

[Wombat North]

He's full of crap.

I've done more testing first hand than anyone on here. I have had no problems whatsoever since putting them in.

Read this thread I did on them right to the end.
http://forums.nasioc.com/forums/show...highlight=rcts

[Hayaboosted]

Ok Cause thats what GRD in Naperville is saying! I guess Ill be trying to find someone else for my tune. They were pretty rude and are saying it will run bad. He sounded like he didnt want to do it cause it would take to long. he also told my friend that he had a kid want the same thing but he "talked some sense in him", and got him to get 820's. He wouldnt even give him a time space of how long it would take, nor if he would even do it. He also told my friend , "you could do the same thing and cut the ends off the injectors since thats all perrin does!" Basically talk **** about Perrin... and how worldone didnt know what they were talking about!

[Hayaboosted]

Well I called back today.. and got a very nice guy from there on the phone. Explained some things and I get were hes coming from. However it going to be about the same route either way I go.. But he stated they would be able to get us to run a little better on the PE's. Now I just have to make a decision on what we are going to do. He thought if I did the pe's it could be tuned in 2-3 max 3. with the modifeds we are looking between 3-4 could be 5. Well the price of pe's are 650 the price of modifieds with shipping is 250 thats 400 dollars diffrence. Dyno tuning is @ 200 an hour. But the first hour is 150 from the reflash! Now I figure 3 hours with the pe's im looking at about 550 for dyno plus the 400 for injectors = 950!! Now Say i run perrin and it takes 5 hours. ( i dont think it ever would..but im not a tuner either) So than im looking at about 950. But say they get it done it 4 hours thats 750= 200 savings and than 3 would be 550 = 400 savings! Either way Im thinking Perrins the way to go!

[STiTuner]

As far as the perrin modified injectors, its has its pluses and minus. if you're going to modify the injector send it to someone who knows how to do it, and then have the flow tested on your own, send them to RC or something. I wouldn't trust any one single person to do them right themselves the first few times. I think thats where a lot of people have had problems.

you probably will see a difference between the PE and the Perrins on paper, but it might not be much.

[WRX Jim]

a normal tune takes 2-3 hours anyways with no base map.

i say, screw the ecutek, get yourself a utec and find a tuner that does utec instead.

[DoctorNick]

Contact Riftswrx, have him tune the injectors at GRD. Tuan is well, not all there.

[Hayaboosted]

What should I do than??

[bboy]

mmmm I like the Jorge (RiftsWRX) idea, it gets you on the dyno, and around the injector issue

[hippy]

I dunno if those injectors can be tuned easily or not(or well or not), but after reading wombats thread I would definately have the injectors ultrasonically cleaned b4 thinkin about using them. Jeff from perrin said there was a person who had an injector fail, course wombat probably woulda had the same problem if he didn't have his injectors cleaned/flow tested b4 he used them. I wonder how many people out there are running around with "dirty" perrin injectors. Maybe this is why that tuner had a bad experience with them? Maybe the person in this link/thread is having a problem with a dirty injector and not his turbo? Just some food for thought,

peace