Date registered: Oct 2005
Vehicle: SL55, 300SE, GL450, Daytona 955i
Location: Lincoln / Boston - MA
Mentioned: 8 Post(s)
Quoted: 324 Post(s)
SL55 RENNtech airbox review - GET ONE NOW!
As some here may know, I ve been installing many mod on my SL55, with safe and reliable 600HP at the crank being the end goal
With the long list of mods I have added in the last few weeks, the RENNtech air box is the one worthy of review, even for those not looking for improving power, but this box is a MUST for any and all SL55
You know the jerk the SL55 does when you're gradually modulating the throttle, and you go from vacuum to boost? The RENNtech box will cure it!
I was very curious about the reason, as this effect is not advertised anywhere, turns out the stock air boxes and tubing are surprisingly restrictive, and vortexes in them are severely disturbed at the moment when the bypass valve closes, to allow boost to build, the supercharger essentially runs out of air to suck in, and the engine surges.
Other side affects are the engine runs smoothly over the entire rev band, as its allowed to breath freely, the power gain is noticeable, but the smoothness is what really drives pleasure into your heart...
I am very happy with the car's overall performance with all mods (check my garage for details), but this box is certainly the best bang for bucks out of the whole list, I know most people will question spending 1500 on an air filter box, but trust me, its really worth it to contact RENNtech and get one. Iegor Ratunda helped me with my box, so he should be able to hook you up, while its fresh on his mind.
Mercedes-Benz, W140 S Class S320 (AKA 300SE)
Mercedes-Benz, R230 SL Class SL55 (///AMG)
Mercedes-Benz, X166 GL CLass GL63 (///AMG)
Ducati 999 with Termignoni and CF
W164 GL class GL450 (sold) - R129 SL Class SL500 (passed on) - W163 M Class ML430 Designo (passed on) - W140 S Class 500SEL(sold) - W140 S Class S320(sold) - W140 S Class S500(sold) - W140 S Class 500SEL(sold) - W201 190E 2.3(sold)
Last edited by bayhas; 04-13-2017 at 06:59 AM.