Snoopy Posted June 10, 2004 Report Share Posted June 10, 2004 Any ideas? Been hot down here pretty much every day for the last couple of weeks, and it's been running a bit rougher and a lot slower. Drove back from `No-Rice` last night and it was 16 degrees instead of the usual `25-27` degrees - it was like I had an extra 50bhp!Any ideas? I know it'll go slightly slower in the hot weather, but not this much... Quote Link to comment Share on other sites More sharing options...
gargoil Posted June 10, 2004 Report Share Posted June 10, 2004 Have you got an induction kit on that's not fed from the front outside of the car?(I'm assuming you've checked your coolant level?) Quote Link to comment Share on other sites More sharing options...
Snoopy Posted June 10, 2004 Author Report Share Posted June 10, 2004 All standard (currently)Edit: No... not specifically...Does it not have a warning light if it gets low? Quote Link to comment Share on other sites More sharing options...
gargoil Posted June 10, 2004 Report Share Posted June 10, 2004 No it's just a manual check of the expansion tank! What about your tyres, at what temperature were they pressurised at!? I think the quoted temps are for 20 degrees! Quote Link to comment Share on other sites More sharing options...
Cliveski Posted June 10, 2004 Report Share Posted June 10, 2004 Air conditioning, if you have it, takes away some of your power . . . Quote Link to comment Share on other sites More sharing options...
Snoopy Posted June 10, 2004 Author Report Share Posted June 10, 2004 Tyres are all inflated correctly - anyway, higher temperatures makes the air expand so they'd be overinflated - better acceleration, less grip.Aircon does make a noticable difference, but it's slow even with it off - with it on it's really slow style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" />I'll check the coolant level tonight. Any other ideas? Quote Link to comment Share on other sites More sharing options...
Cliveski Posted June 10, 2004 Report Share Posted June 10, 2004 Have you put on weight recently? Quote Link to comment Share on other sites More sharing options...
gargoil Posted June 10, 2004 Report Share Posted June 10, 2004 Move to Scotland it dosen't get that hot here! style="vertical-align:middle" emoid=":lol:" border="0" alt="laugh.gif" /> Quote Link to comment Share on other sites More sharing options...
Snoopy Posted June 10, 2004 Author Report Share Posted June 10, 2004 Nice to see the quality of the suggestions is staying high! style="vertical-align:middle" emoid=":lol:" border="0" alt="laugh.gif" /> Quote Link to comment Share on other sites More sharing options...
Crusoe Posted June 10, 2004 Report Share Posted June 10, 2004 have you been using dodgy cheap fuel with the prices on the up, could just be an iffy tank full? Quote Link to comment Share on other sites More sharing options...
Presty Posted June 10, 2004 Report Share Posted June 10, 2004 Any car will run better when there is cold air running through the engine, so when the air cools down in the evening or the day is colder then the car will run better and feel that bit quicker.My car feels like its flying in the autumn/winter, best time for a thrash is dusk in the summer as air is normally cooler. Quote Link to comment Share on other sites More sharing options...
gargoil Posted June 10, 2004 Report Share Posted June 10, 2004 Yeah but they're won't be as big a difference as he describes! Quote Link to comment Share on other sites More sharing options...
Crusoe Posted June 10, 2004 Report Share Posted June 10, 2004 If I take my intake cover off so it's taking in hot air from the engine it feels like you've lost about 50bhp, sounds like a tvr though style="vertical-align:middle" emoid=":lol:" border="0" alt="laugh.gif" /> could be a cracked breather pipe or something like that or the cover for the airbox could be loose. Quote Link to comment Share on other sites More sharing options...
Snoopy Posted June 10, 2004 Author Report Share Posted June 10, 2004 I'll check out the intake piping and airbox. Always use Optimax or BP Ultimate (both 89.9p down here :shock: ) in it, and I've tried different garages, so I doubt it's the fuel. Quote Link to comment Share on other sites More sharing options...
-=R LUPO Posted June 10, 2004 Report Share Posted June 10, 2004 Ok heres the science!I wondered this last month: " where is the coldest air in my engine?"So I went out and bought a fridge thermometer, the ones chefs use on their fridges, it has a digital display and has about 3m of wire with the thermocouple on the end! (£3 ish)Placed it next to where the air hits the induction kit. When engine warm and traveling at a steady 60mph, temp was around 25oC.When stood in traffic lights, temp rose to 56oC.Moved the thermocouple (end bit to the layman) to different areas in the engine, and also under the front bumper, grille, etc. (havent done anything drastic like remove a lamp.....yet), had varying results. All this was to find out where the coolest air is, as the colder the air is the more dense it is and therefore the more combustion takes place = perfomance!!!So I should imagine that the warmer the outside air temperature is, the less dense the air is = less combustion. :roll: Hope this helps. style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" /> Quote Link to comment Share on other sites More sharing options...
Snoopy Posted June 10, 2004 Author Report Share Posted June 10, 2004 It's very true, but I wouldn't expect to lose this amount of power - it's not like it's a turbo experiencing heatsoak or something... Quote Link to comment Share on other sites More sharing options...
gargoil Posted June 10, 2004 Report Share Posted June 10, 2004 But it could be heatsoak due to the position of the filter, imprezas are notorious for it due to the bad position of the intercooler, evos being better having it front mounted! Quote Link to comment Share on other sites More sharing options...
M1 Lupo Posted June 14, 2004 Report Share Posted June 14, 2004 Problem solved: border="0" class="linked-image" /> border="0" class="linked-image" /> Quote Link to comment Share on other sites More sharing options...
tdwindustries Posted June 16, 2004 Report Share Posted June 16, 2004 LOL u love showing that off dont u M1 Quote Link to comment Share on other sites More sharing options...
DanGTI Posted July 21, 2004 Report Share Posted July 21, 2004 Ive got a pipercross ind. kit on the arosa, tried it without a cold feed and it makes the car feel much slower than standard on a hot day (fine when its cold and the engine hasnt run for long), now ive got a cold air feed from the front grille blowing straight into the filter it makes a huge difference. Quote Link to comment Share on other sites More sharing options...
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