I cant find this in search so im posting a new thread.

Does the RMM intake from the GS430 fit the GS400 and/or GS300?

 

it MIGHT fit on the gs400, but for sure NOT gs300

 

For sure it will not fit the 300. I think the 430 and 400 are not compatible either. Toyota changed the MAF design around 00 or 01. Thats why the 98-00 GS intakes are not compatible with the 01-05. I think the same goes for the V8s.

 

Can't speak specifically for the RMM but other intakes I've looked into (SRT) for the V8 are not compatable. There are two different models, one for the 400 and one for the 430. I did find one link for RMM that states this model only fits 98-00 400 engines, so I'm assuming there's another one for the 430.

http://www.suprastore.com/gs400airinsy.html

 

Gs400 and Gs430 MAF mount is different. Totaly differrent shape. And ECU pins location are differrent.

 

I can't tell you about fitment between gs3 and gs4 but I can tell you that when I had the Rmm intake installed on my gs3, it killed my low end take off big time. The gs really didn't respond until the revs got past 3k. If your looking to increase top end grunt, the Rmm will do the trick but it will kill your low end. From a GS3 perspective, the gains in upper end power were not worth the loss of low end power. Somehow I don't think the outcome on a GS4 will be much different from the gs3 but only way to find out is to put it on.