hiya a friend of mine got a twin turbo 93 rx7 he was told that their is a way that you can wire both the turbos to work at the same time is this true and how can it be done and is it safe thanks

 

Yes, look in the faq's and sticky's at the top of the 3rd gen page. It's called non sequential. Use the search too answer all your questions.

 

Yep, non-seq. = more lag, not good...

 

Under hard acceleration the 2nd turbo kicks in at 4500 rpm. At that point, you are using both turbos.

 

so not a good idea thanks

 

Do a search on non-seq. Some people like it some others don't. I had non-seq in my car. with the stock I/C I loved it but once I upgraded to a FMIC I hated it.

 

You get more power out of non-seq. and at the same time if something goes wrong you dont have to mess with all those damn hoses

 

Don't believe that you get more lag bs...

 

Care to elaborate?

 

Even the most staunch non-sequential fans admit that there is more lag with non-seq, even with full exhaust....

There are trade-offs with both setups and they have been covered ad nauseum.
https://www.rx7club.com/search.php?searchid=1318802

 

as soon as your sequential system fails and it becomes difficult if not impossible to find the problem, you'll see the light. i don't believe non-seq. makes more power, but it certainly makes the car more reliable in that you never have a boost problem again without it being a fairly obvious problem. as far as lag, it's easy to change your driving habits in a car that redlines at 8000 rpms so that you can be on boost if needed most of the time.