funkymofo Posted April 30, 2008 Posted April 30, 2008 Plenum spacers......excuse my lack of knowledge but what are they, what do they do for poerformance and how do they do it? Also who make them, where can I buy them (bigphil per chance? ) and how much. At a guess I would say its some sort of device to effectively increase the capacity of the inlet manifold? But thats just guess work, it took me a weekto realise a pop charger was just a fancy name for an induction kit Quote
bigphil Posted April 30, 2008 Posted April 30, 2008 In simple terms it does as you say, increases he olue of the intake plenum which by design is restrictive on the front, the gains ar to strengthen he mid range on the car. Most popular is the Motordyne 5/16th which of course we have in stock at £195 http://www.motordyneengineering.com/ Quote
funkymofo Posted April 30, 2008 Author Posted April 30, 2008 cheers Phil Anyone have one of these fitted? Would you reccomend it? Are the 10hp gains far fetched or is that actually the case? I dont really care about numbers though, if it offers better mid range performance that would be fab! Quote
Chris`I Posted May 1, 2008 Posted May 1, 2008 cheers Phil Anyone have one of these fitted? Would you reccomend it? Are the 10hp gains far fetched or is that actually the case? I dont really care about numbers though, if it offers better mid range performance that would be fab! I had one fitted by our man Phil, and yes it does indeed improve mid range, on the butt dyno at least. I wouldnt say it gives a massive increase, but its certainly feelable and one of the few mods the ECU doesnt cancel out Quote
Zedrush Posted May 1, 2008 Posted May 1, 2008 I got one to mate from Big Phil, really glad I purchased it, makes the note of the exhaust deeper too imo. I had one before but it was an atmospheric one which is really for forced induction so I was loosing out, but Phils ones are spot on Quote
H5 Posted May 1, 2008 Posted May 1, 2008 Have spoken to Chris and Mark (3FIDDYZ) who both have one fitted and it does seem to make a difference. IIRC 3FIDDY also has the Motordyne 5/16th fitted. Should be on the list. Quote
Chris`I Posted May 1, 2008 Posted May 1, 2008 Have spoken to Chris and Mark (3FIDDYZ) who both have one fitted and it does seem to make a difference. IIRC 3FIDDY also has the Motordyne 5/16th fitted. Should be on the list. I have the Motordyne 5/16th Quote
Nimrod Posted May 1, 2008 Posted May 1, 2008 cheers Phil Anyone have one of these fitted? Would you reccomend it? Are the 10hp gains far fetched or is that actually the case? I dont really care about numbers though, if it offers better mid range performance that would be fab! I had one fitted by our man Phil, and yes it does indeed improve mid range, on the butt dyno at least. I wouldnt say it gives a massive increase, but its certainly feelable and one of the few mods the ECU doesnt cancel out I have the Motordyne 5/16 spacer coupled with a Motordyne MREV2 Lower Collector. Both do improve mid range torque but I'm doubtful that you will see any gains in BHP as the ECU does negate any advertised power gains IMHO. The Lower Collector will further improve airflow to Nos. 1&2 cylinders on REVUP engines only. The only effective way to get full advantage of bolt-on mods is to get a ECU re-flash or send the ECU away.However do the moderate power gains to be had justify the costs involved in upgrading the ECU?? Kevin at Envy Performance was looking into offering a ECU reflash service some time back but not sure what the outcome was. You can go to 1/2 spacer but this will require a modified strut bar to clear the plenum. Quote
bigphil Posted May 1, 2008 Posted May 1, 2008 cheers Phil Anyone have one of these fitted? Would you reccomend it? Are the 10hp gains far fetched or is that actually the case? I dont really care about numbers though, if it offers better mid range performance that would be fab! I had one fitted by our man Phil, and yes it does indeed improve mid range, on the butt dyno at least. I wouldnt say it gives a massive increase, but its certainly feelable and one of the few mods the ECU doesnt cancel out I have the Motordyne 5/16 spacer coupled with a Motordyne MREV2 Lower Collector. Both do improve mid range torque but I'm doubtful that you will see any gains in BHP as the ECU does negate any advertised power gains IMHO. The Lower Collector will further improve airflow to Nos. 1&2 cylinders on REVUP engines only. The only effective way to get full advantage of bolt-on mods is to get a ECU re-flash or send the ECU away.However do the moderate power gains to be had justify the costs involved in upgrading the ECU?? Kevin at Envy Performance was looking into offering a ECU reflash service some time back but not sure what the outcome was. You can go to 1/2 spacer but this will require a modified strut bar to clear the plenum. No gain from the 1/2'' over the 5/16th Quote
3FIDDYZ Posted May 1, 2008 Posted May 1, 2008 No further info needed..... Buy one, enjoy the extra power / noise / torque... The end.... Oh, and they do improve BHP, only sure thing that will... Quote
N15MNO-Daron Posted May 2, 2008 Posted May 2, 2008 Phil - can u also get the Motordyne MREV2 Lower Collector? Quote
GIXXERUK Posted May 2, 2008 Posted May 2, 2008 cheers Phil Anyone have one of these fitted? Would you reccomend it? Are the 10hp gains far fetched or is that actually the case? I dont really care about numbers though, if it offers better mid range performance that would be fab! I had one fitted by our man Phil, and yes it does indeed improve mid range, on the butt dyno at least. I wouldnt say it gives a massive increase, but its certainly feelable and one of the few mods the ECU doesnt cancel out I have the Motordyne 5/16 spacer coupled with a Motordyne MREV2 Lower Collector. Both do improve mid range torque but I'm doubtful that you will see any gains in BHP as the ECU does negate any advertised power gains IMHO. The Lower Collector will further improve airflow to Nos. 1&2 cylinders on REVUP engines only. The only effective way to get full advantage of bolt-on mods is to get a ECU re-flash or send the ECU away.However do the moderate power gains to be had justify the costs involved in upgrading the ECU?? Kevin at Envy Performance was looking into offering a ECU reflash service some time back but not sure what the outcome was. You can go to 1/2 spacer but this will require a modified strut bar to clear the plenum. No gain from the 1/2'' over the 5/16th iirc you cant fit the oem strut brace with a 1/2" Quote
bigphil Posted May 2, 2008 Posted May 2, 2008 Phil - can u also get the Motordyne MREV2 Lower Collector? Yes we have those. Quote
3FIDDYZ Posted May 2, 2008 Posted May 2, 2008 Not sure how much the MREV's help on an 04 car. And no the strut wont fit on the 1/2 but you can get an aftermarket one... Quote
Nimrod Posted May 2, 2008 Posted May 2, 2008 Not sure how much the MREV's help on an 04 car. And no the strut wont fit on the 1/2 but you can get an aftermarket one... If your engine is the 300PS (296) model it's the REVUP engine. If it's the older 276 engine the MREV2 will be of no benefit and therefore a waste of money. Quote
Nimrod Posted May 2, 2008 Posted May 2, 2008 Not sure how much the MREV's help on an 04 car. And no the strut wont fit on the 1/2 but you can get an aftermarket one... If your engine is the 300PS (296) model it's the REVUP engine. If it's the older 276 engine the MREV2 will be of no benefit and therefore a waste of money. Quote
funkymofo Posted May 2, 2008 Author Posted May 2, 2008 No further info needed..... Buy one, enjoy the extra power / noise / torque... The end.... Oh, and they do improve BHP, only sure thing that will... thats the kind of answer I like! Will be in touch soon big phil Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.