4.2 v6 chip performance
I had a Superchip in my previous truck, a '97 4.2/5-speed. There was a noticeable increase in power in all RPM ranges. Don't expect a gas mileage gain if you like to accelerate briskly though
I believe the Superchip adds 25 flywheel HP. It was worth the money to me. Good luck.
I believe the Superchip adds 25 flywheel HP. It was worth the money to me. Good luck.
Thanks for the answer , I do like to go briskly, sounds like you do too. Im getting ready to run nx and a friend told me I should use a flip chip one for fast street and one program for when your on the bottle. Does any one have this set up on a v6 5 spead. My buddy runs this same set up on his lightning. He uses 35h shot nx with a super chip dual program. we where wondering how well it work on my v6.and what to expect out it.
Hi mr2X75,
Yes, you'll need the 2-program Superchip Flip Chip to run nitrous, as you'll need one program to tune the engine properly with nitrous, and another program for the rest of the time when nitrous is not being used.
You will also need to use a "wet" nitrous kit, meaning a kit that augments fuel delivery with additional fuel, as your factory 19 lb. injectors will never support any amount of "dry" nitrous whatsoever.
At a .500 BSFC (brake specific fuel consumption), 19 lb. injectors in a 6-cylinder engine will support a maximum of just 228 horsepower at 80% duty cycle, and of course more at 100%, but you generally want some "headroom".
By the time you add a Superchip, an airbox kit and a cat-back exhaust system to a 4.2 V-6 F-150, you're not too far away from maxing out the stock 19 lb/ injectors. So for additional mods & power gains beyond the Superchip, airbox kit & cat-back exhaust on these 4.2 V-6's, then it's time for an aftermarket MAF & a set of 24 lb. injectors, which can support 288 horsepower at 80% duty cycle & well over 300 hp at 100%.
Give us a call if you'd like to go over all of this in detail. We'll be happy to get you tuned correctly with the Superchip should you decide to go the nitrous route.
Good luck!
Yes, you'll need the 2-program Superchip Flip Chip to run nitrous, as you'll need one program to tune the engine properly with nitrous, and another program for the rest of the time when nitrous is not being used.
You will also need to use a "wet" nitrous kit, meaning a kit that augments fuel delivery with additional fuel, as your factory 19 lb. injectors will never support any amount of "dry" nitrous whatsoever.
At a .500 BSFC (brake specific fuel consumption), 19 lb. injectors in a 6-cylinder engine will support a maximum of just 228 horsepower at 80% duty cycle, and of course more at 100%, but you generally want some "headroom".
By the time you add a Superchip, an airbox kit and a cat-back exhaust system to a 4.2 V-6 F-150, you're not too far away from maxing out the stock 19 lb/ injectors. So for additional mods & power gains beyond the Superchip, airbox kit & cat-back exhaust on these 4.2 V-6's, then it's time for an aftermarket MAF & a set of 24 lb. injectors, which can support 288 horsepower at 80% duty cycle & well over 300 hp at 100%.
Give us a call if you'd like to go over all of this in detail. We'll be happy to get you tuned correctly with the Superchip should you decide to go the nitrous route.

Good luck!
Thanks mike, The kit we where looking at was a nitrous exspress wet kit, I didnt know what injectors to use. also what size maf do you sugest? do I need to install both at the same time,also do I need to use a higher volume fuel pump? Thanks mr2x75
Hi mr2X75,
We can help you with all of that, and we'll be happy to. As I mentioned before, you'll need to give us a call to go over the details.
Briefly, the size of injectors & MAF you need will depend on the power output of the combination, and it's configuration. For example, most of these fuel systems are return-type up thru 1998 and some 1999's, newer systems are mostly returnless, which alters the formula used to calculate injector sizing.
In general, Nitrous Express is doing some nice things, they're a good company to deal with & you should have good results with their gear. When you use a "wet" kit that properly and fully augments fuel delivery, then many times you don't have to go to larger injectors; for example, some of them (meaning some nitrous kits) operate almost like blower kits with FMU's do, with a mechanism to rise fuel rail pressure in direct correlation to rpms, etc., and some do not, some use other methods, etc. A "dry" nitrous system (which is one that does not augment fuel delivery) cannot be used in these V-6's without going to a larger injector, as there is no extra capacity for nitrous in the 4.2 V-6 injectors. We'll just need to see how this particular kit is configured & tune accordingly.
You'll be close to maxing out your injectors even when not spraying the nitrous, once you have a Superchip, airbox kit and an opened exhaust on there, as I mentiond in my last post to you.
We do have some V-6 F-150 owners doing exactly that, running a small "wet" nitrous kit that augments fuel delivery, and then running the Flip Chip, the Air Force One intake kit, and an opened exhaust, and that combo can work fine on the factory injectors **as long as** the nitrous kit properly augments fuel delivery when spraying. It's just that to go *beyond* that level of bolt-on mods, when not spraying, will go over injector capacity pretty quickly, so then it's time for larger injectors & the MAF.
We may find that in your case, you don't need to go to the expense of larger injectors & the MAF, we'll go over all of that and more when you call.
I don't know what modifications you may have done already, but just to mention it, I wouldn't even think about spraying nitrous until you have an airbox elimination kit and get the exhaust opened up, otherwise the nitrous isn't going to be nearly as effective as it could. You might have already taken care of those areas already, I don't remember, so I'm just mentioning it.
The bottom line is, you need to give us a call to cover this properly & get all the details, etc.
Sounds like fun!
We can help you with all of that, and we'll be happy to. As I mentioned before, you'll need to give us a call to go over the details.
Briefly, the size of injectors & MAF you need will depend on the power output of the combination, and it's configuration. For example, most of these fuel systems are return-type up thru 1998 and some 1999's, newer systems are mostly returnless, which alters the formula used to calculate injector sizing.
In general, Nitrous Express is doing some nice things, they're a good company to deal with & you should have good results with their gear. When you use a "wet" kit that properly and fully augments fuel delivery, then many times you don't have to go to larger injectors; for example, some of them (meaning some nitrous kits) operate almost like blower kits with FMU's do, with a mechanism to rise fuel rail pressure in direct correlation to rpms, etc., and some do not, some use other methods, etc. A "dry" nitrous system (which is one that does not augment fuel delivery) cannot be used in these V-6's without going to a larger injector, as there is no extra capacity for nitrous in the 4.2 V-6 injectors. We'll just need to see how this particular kit is configured & tune accordingly.
You'll be close to maxing out your injectors even when not spraying the nitrous, once you have a Superchip, airbox kit and an opened exhaust on there, as I mentiond in my last post to you.
We do have some V-6 F-150 owners doing exactly that, running a small "wet" nitrous kit that augments fuel delivery, and then running the Flip Chip, the Air Force One intake kit, and an opened exhaust, and that combo can work fine on the factory injectors **as long as** the nitrous kit properly augments fuel delivery when spraying. It's just that to go *beyond* that level of bolt-on mods, when not spraying, will go over injector capacity pretty quickly, so then it's time for larger injectors & the MAF.
We may find that in your case, you don't need to go to the expense of larger injectors & the MAF, we'll go over all of that and more when you call.
I don't know what modifications you may have done already, but just to mention it, I wouldn't even think about spraying nitrous until you have an airbox elimination kit and get the exhaust opened up, otherwise the nitrous isn't going to be nearly as effective as it could. You might have already taken care of those areas already, I don't remember, so I'm just mentioning it.
The bottom line is, you need to give us a call to cover this properly & get all the details, etc.

Sounds like fun!


