Are there larger injectors, if any, that will fit the stock s5 fuel rails and the connectors without modification? If so, where can they be had?

 

Yes Greddy sells drop in 720's

 

There are many.



Like Revvin said, you can go w/ GReddy(I am) for about $115each. Bosch makes numerous kinds, but the 1600s need a custom rail. Check horsepowerfreaks.com for the GReddy..they are your best bet...and of course Rx7.com has drop in injectors too.

 

go with the bosch they are good stuff. and having to get a custome fuel rail sucks but it not that much and then you can tell you're friends that you have custome fuel system.... also get a good regulator and pump you can go bosch with the pump agian cheap and one of the best out there

 

nobody makes drop in for the S5. the clips are different then the S4. and the resistance is different. 88-91 you need to add resistors when putting bigger injectors in. and I belive that on 89-91 you need to cut something off the clip or injector to make it fit.



I think the only thing you can do is send the stock one's to RC. they can make them much bigger like 1000cc. but it costs alot more then buying new injectors... but atleast they will fit right in.

 

ack. how about adding additional injectiors and using one of those haltech f5 computers? that would be easier to controll than adding 1600's using the stock computer. hell, another set of 550's could probably be had for a reasonable price and an aditional fuel rail couldnt be that hard to fab up.

 

that works too, there are plenty of additional injector controllers out there



mike