Hey, fellas. I have 93 fd 100% stock, and I wanted to get some more air flowing by getting rid of the stock air intake. I wanted to get cold-air intake, but don't know which one to choose. I see some Bomz pipe kit. What is the best cold-air for an fd? and would i be needing a bypass valve?

 

cold air intake? Well, there is the cheap stock airbox mod which pulls air from underneath the airbox instead of the intercooler duct. Otherwise, most of the aftermarket intake systems are not cold air. They are open filters that are usually right above the radiator. Other options include a headlight scoop or vented hood in some instances which may help get a bit more "cold" air. Try a bigger intercooler for more cold air, or at least a better/higher boost charge which is the equivalent. It'll be a bit more efficient in respect to trying to make large gains from colder, denser air. The bomz kit has crappy couplers from what I understand, but the pipes seem to be decent. However, those bomz pipes are not going to change your configuration for any sort of cold air setup.

 

Some tests have shown that K&N and Apexi work the best. The Apexi kit is good for the 200 bucks it costs on rx7store.net. AdamC sells a kit. PM him. The Pettit one has a heat shield but it's a little on the expensive side around 400. The hks one is overpriced. If you're feeling adventurous, buy the k&n filters and build your own. Good luck.

 

if 100% stock, a downpipe should be your first performance mod, followed by a catback. Save the intake for when you upgrade the ECU.

 

^This is good advice. After the DP, this has some helpful info.
http://www.scuderiaciriani.com/rx7/intake.html

Jim

 

If you are looking for a CAI none of the above (Apexi, Petit, Blitz etc.)
You have to go for someting like the M2 unit

 

you could just read the newbie stickies and search for the 2-3 threads about cold air intakes in the "Advanced Tech" section.

 

I think it is a fair question, asked civily.
I like what Stevey629, Larz, Sgtblue have said to answer your question.

I would only add that for every modification you do, you risk upsetting the factory tune. You may notice idle problems, boost spikes, and risk of detonation with high-flow modifications.

All in all, I like Adam_C's because it isn't too over the top, and offers good gains.

 

Some good comments here, but to avoid getting flamed it is usefull to do a search first, as some members seem to get offended if you do not do your homework

 

Yes it is, but honestly I don't think he is going to get anything useful from starting another thread about CAI that hasn't already been beaten to death. He can learn more by reading the existing threads than hoping someone will regurgitate what is there. Trying to be helpful by leading him to the info...

Plus we just had yet another thread a couple of days ago about the Bomz pipes so...

I have and adam_c type mod to my box also.

 

I just got the Bomz Kit in Today....the upper pipe is great....the lower pipe does not fit well....and the couplers suck...almost better off using duct tape. But, for $35 It aint bad......but it aint good either.

 

or you could just do adam c's cheap bastard intake...

 

Was someone looking for me

My intake mod keeps the stock look, and adds some significant power. It even passes smog. For $70, its dirt cheap

More info here: https://www.rx7club.com/forum/showth...hreadid=121491