Jeep Strokers

Was wondering what else you have done to the computer after 27lb injectors and a 66mm throttle body??
A little history first ,well this is my second stroker as the first one decided that the cam gear should eat up the distributor gear, which is not replaceable in a 2006 after a second distributor got chewed up after 100 miles , i ordered a atk baja stroker with the above parts but was told i would need to get a new computer today from the dealer because the factory one is not able to be programmed for that size injector and throttle body so now to my question is there such a beast out there or will a diablo do the trick?
thanks for your input
ps i have a stroker for sale needs new cam though

You don't need a new PCM. Get the appropriate sized injectors. 27lbs will be too large. Also, you have higher fuel pressure. 58 PSI +/- 2 PSI.

Why are you selling the stroker though if your asking about larger injectors?

SilverXJ wrote:You don't need a new PCM. Get the appropriate sized injectors. 27lbs will be too large. Also, you have higher fuel pressure. 58 PSI +/- 2 PSI.

Why are you selling the stroker though if your asking about larger injectors?

I am selling my 1st stroker that requires a new cam, as the gear that drives the oil pump is chewed up , rather then rebuild it i bought the atk stroker

I also have a question on your comment reguarding the injector size and fuel pressure . Why do you beleive that 27lb is to large i have read many post where guys are using the 27lb on the 4.7 as well as atk guy recommendeds 24-27lb , i was also under the assumption the stock fuel pressure was 49psi on a 2006 am i wrong?
thanks for your input as you might tell motors are my weak point!

MUDSTUD wrote:I also have a question on your comment reguarding the injector size and fuel pressure . Why do you beleive that 27lb is to large i have read many post where guys are using the 27lb on the 4.7 as well as atk guy recommendeds 24-27lb , i was also under the assumption the stock fuel pressure was 49psi on a 2006 am i wrong?

Yes, 27lb is too large. It has been proven many times that the ideal injector is 24-25 lbs on the rail. Hesco recommends it as well and that is what they sell. There are two reasons that come to mind why people are running such large injectors. 1) 5-0 performance sells a set of injectors labeled for the stroker. They are 27lbs. They are too large. The PCM does not care for too large of an injector as it can't control it. When I had teh 27lbs idle was hunting up and down, fuel trims were ridiculous and WOT was richer than my wideband could even read. 2) Someone used one of those stupid injector calculators on the internet which recommend 27-28lbs for the stroker.

As for the fuel pressure, yes it is higher. I believe they changed in 2005 to 58 psi. Here are some threads that may help you:
http://www.jeepstrokers.com/forum/viewt ... 109#p23109
http://www.jeepstrokers.com/forum/viewt ... =15&t=2447
http://www.jeepstrokers.com/forum/viewt ... 906#p23906

The recommendations that I have on my site for '05-'06 engines are:

'98 Chevy LS1 25.2lb/hr injectors

4.6L Rockcrawler, 4.6L Poor Man's, and 4.2L Milder mini-stroker recipes

'99-'00 Chevy LS1 26.2lb/hr injectors

4.6L Low Buck and 4.2L Wilder mini-stroker recipes

'01-'02 Chevy LS1/LS6 28.6lb/hr injectors

4.7L Medium Buck recipe

I have a 4.9 Stroker in my 06. Fuel trims were a little Rich. After a tune the 27"s worked just fine.

I have a 4.9 Stroker in my 06. Fuel trims were a little Rich. After a tune the 27"s worked just fine.