James Posted March 18, 2012 Share Posted March 18, 2012 First of all, my spec is NA-TT 5 speed with: Walbro 255 NGK Iridium Grade 7 plugs 2nd decat Envy 1.2 Bar RR RSR S/S Catback Exhaust SRD 2 row FMIC Blitz BOV HKS FCD HKS SLD When I got the car, it had a stock airbox fitted and the mild steel version of the RSR exhaust (which I believe is a smaller diameter than my current one). I hit 0.7 and 0.8 bar at the first then 2nd turbo respectively. I've had this Pipercross Carbon Induction Kit fitted to the car since it has been back on the road: With the new RSR exhaust, it has been seeing only 0.65 and 0.75 bar of boost. This afternoon, I changed back to a stock airbox with a new K&N filter. Managed to wrestle (blood, sweat and lots of shouting later) the FMIC pipes back on (proving you CAN run the stock airbox with a front mount ) and tightened everything back up. The car is now boosting 0.7 and 1.0 bar and feels RIDICULOUSLY fast (being a 5 speed, the ratios are in my favour ). Was breaking traction in a straight line in the bone dry with my new 275s and pulling sideways a bit! Awesome I was surprised that there was that much restriction from the other filter. Suffice to say, I'm glad I bought another stock airbox! 1st decat to come next, that should be interesting! Will have to get it dyno'd then to see what it is putting down! Quote Link to comment Share on other sites More sharing options...
Wez Posted March 18, 2012 Share Posted March 18, 2012 Isn't the pipercross unit fitted the wrong way round? Quote Link to comment Share on other sites More sharing options...
FOSTA Posted March 18, 2012 Share Posted March 18, 2012 Isn't the pipercross unit fitted the wrong way round? Yeah lol I think it is mate Pmsl Quote Link to comment Share on other sites More sharing options...
James Posted March 18, 2012 Author Share Posted March 18, 2012 Probably, it was garbage anyway! I'm glad it is off! Car hasn't boosted like this ever before. It's mental. I see why everyone says that 5 speed BPUs are like small singles! Certainly makes me want a GT35 or something! Quote Link to comment Share on other sites More sharing options...
FOSTA Posted March 18, 2012 Share Posted March 18, 2012 Fantastic mate! I had sort of the same thing happen to me with my Corsa 2.0ltr turbo but it was also cutting out now and again, it took me ages to work out it was just the damn k&n restricting air flow but then again I was using the k&n air filter that was from my 1.2 engine pmsl oooooops! Mega fail on my behalf! Lol Quote Link to comment Share on other sites More sharing options...
Parry_10 Posted March 18, 2012 Share Posted March 18, 2012 Probably, it was garbage anyway! I'm glad it is off! Car hasn't boosted like this ever before. It's mental. I see why everyone says that 5 speed BPUs are like small singles! Certainly makes me want a GT35 or something! I would never say my 5 speed bpu is like a small single no where near and I made 427bhp, have you been out in a supra with a small single? Quote Link to comment Share on other sites More sharing options...
suprasize Posted March 18, 2012 Share Posted March 18, 2012 Glad to see the old air box making a difference dude Quote Link to comment Share on other sites More sharing options...
James Posted March 18, 2012 Author Share Posted March 18, 2012 I would never say my 5 speed bpu is like a small single no where near and I made 427bhp, have you been out in a supra with a small single? No, but I have read it many times and know that the way it comes on boost is ace now, making me want a small single 6 speed! Glad to see the old air box making a difference dude Haha yeah, thanks! Quote Link to comment Share on other sites More sharing options...
ashbuster Posted March 18, 2012 Share Posted March 18, 2012 any reason why your boost is low at bpu? edit nevermind i guess you still have your first cat in? if you do, get rid of it and have your boost turned to 1.2 bar, that would put a big smile on your face Quote Link to comment Share on other sites More sharing options...
Supra N_A Posted March 18, 2012 Share Posted March 18, 2012 Pics please of the stock box with the fmic as I am getting fmic and want to keep stock box Quote Link to comment Share on other sites More sharing options...
Tyson Posted March 18, 2012 Share Posted March 18, 2012 Isn't the pipercross unit fitted the wrong way round? Indeed it should be as I had one on my ZR, it won't work properly the otherway round which is why you were experiencing poor performance. Quote Link to comment Share on other sites More sharing options...
dude Posted March 18, 2012 Share Posted March 18, 2012 I would never say my 5 speed bpu is like a small single no where near and I made 427bhp, have you been out in a supra with a small single? I think they feel like a small single and I have been in a few single cars !!! Quote Link to comment Share on other sites More sharing options...
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