lozza Member 121 Member For: 15y 5m 26d Gender: Male Location: Westside Melbourne Posted 08/01/10 09:03 AM Share Posted 08/01/10 09:03 AM Hey guysI fitted my 4" dump 5" cat and 3.5" exhaust the other week because I dont feel like paying some monkey 500 bucks to do up a couple of bolts and do something I couldnt do in 3 hours in my garage. But I have noticed it cuts out at shorter revs, has less speed at the same revs, (ie I could wind out second to 105 with standard exhaust, now I can only get 95 max). Just did this for an experiement as I know I prob shouldnt be gunning it without a tune. I dont really want to get a tune right now as I'm in the process of getting all my parts together to put on it, and really rather save myself 900 bucks on another tune. Question is, is it safe to run it without the tune for a couple of more weeks or should I consider one asap?Is it alrite to give a bootful or should I baby it til its done?I usually use it for driving to work so it doest usually see the rev limiter, sometimes on the weekend to show up the Expensive Daewoo boys and any other tool that thinks my car is a N/A XR6 (debadged the turbo lol).Thanks in advance for the help. Link to comment https://www.fordxr6turbo.com/forum/topic/64947-fitted-35-exhaust/ Share on other sites More sharing options...
Paulie2256 Donating Members 7,441 Member For: 16y 7m 1d Gender: Male Location: SE Melbourne Posted 08/01/10 09:54 AM Share Posted 08/01/10 09:54 AM Someone will correct me if im wrong but im pretty sure changing the exhaust without a tune may contribute to boost spike. Also because the backpressure has changed it will probably feel a bit slower. I wouldnt risk it and get a tune sooner rather than later. Link to comment https://www.fordxr6turbo.com/forum/topic/64947-fitted-35-exhaust/#findComment-969172 Share on other sites More sharing options...
lozza Member 121 Member For: 15y 5m 26d Gender: Male Location: Westside Melbourne Posted 08/01/10 10:20 AM Author Share Posted 08/01/10 10:20 AM Cheers mate. Yeh a tune is defianatly on the cards, just trying to put it off til I can get the parts fitted to the car. The exhaust was a nesecity as I kinda squashed my old one lol. Link to comment https://www.fordxr6turbo.com/forum/topic/64947-fitted-35-exhaust/#findComment-969177 Share on other sites More sharing options...
straughsberry Donating Members 1,846 Member For: 17y 10m 5d Gender: Male Location: Broady, Melbourne Posted 08/01/10 11:23 AM Share Posted 08/01/10 11:23 AM If you've relieved back pressure, you should be making a little more power thanks to a little more boost. Link to comment https://www.fordxr6turbo.com/forum/topic/64947-fitted-35-exhaust/#findComment-969201 Share on other sites More sharing options...
ExAreSix TRAITOR Member 1,063 Member For: 22y 8m 3d Gender: Male Location: Townsville, NQ Posted 08/01/10 07:42 PM Share Posted 08/01/10 07:42 PM What do you mean it 'cuts out at shorter revs'?I'm assuming you're hitting boost cut. Don't flog it till you get a tune.An exhaust won't change your gearing. So your 2nd gear redline road speed will not have changed. Link to comment https://www.fordxr6turbo.com/forum/topic/64947-fitted-35-exhaust/#findComment-969231 Share on other sites More sharing options...
Craig. Member 563 Member For: 18y 3m 3d Gender: Male Location: Sunshine Coast QLD Posted 08/01/10 08:38 PM Share Posted 08/01/10 08:38 PM Just to be on the safe side, drive it like your nanna would until you get that tune. Link to comment https://www.fordxr6turbo.com/forum/topic/64947-fitted-35-exhaust/#findComment-969235 Share on other sites More sharing options...
82CNT Member 363 Member For: 16y 6m 22d Gender: Male Location: Brisbane North Posted 09/01/10 12:09 AM Share Posted 09/01/10 12:09 AM Your computer will be cutting it out for u thanks to the freeing up of things and as stated the increase in boost. If u have a gauge you would be seeing something far different than the standard 5psi. Be on the safe side and dont hit the loud pedal. It will be fine if u dont give it berries! Link to comment https://www.fordxr6turbo.com/forum/topic/64947-fitted-35-exhaust/#findComment-969262 Share on other sites More sharing options...
lozza Member 121 Member For: 15y 5m 26d Gender: Male Location: Westside Melbourne Posted 09/01/10 04:13 AM Author Share Posted 09/01/10 04:13 AM Yeh I wish I did have a gauge. One of the things on the to-do list. What I mean exaresix is that it will cut out at say 5 thousand revs instead of the 6000 odd I use to get out of it. Might just be the extra boost revving too hard and surging or anything. I got no idea to be honest. Tune should happen in the next 2-3 weeks hopefully but I was just checking that its not going to do any serious damage in that timeTHanks guys Link to comment https://www.fordxr6turbo.com/forum/topic/64947-fitted-35-exhaust/#findComment-969303 Share on other sites More sharing options...
Dirty32 Legendary member!! Donating Members 1,739 Member For: 18y 5m 1d Gender: Male Location: Dianella, West Oz Posted 11/01/10 01:25 AM Share Posted 11/01/10 01:25 AM You would also want to be very careful bashing 6000 revs...Definately risking Oil Pump gears (big cost if they go!!) and without a tune, possibly your engine (depending on model of vehicle).With the exception of drag built monsters, 99% of the cars on this site will not make any more power past 5500 rpm anyways, so you shouldnt need to go to 6000! Link to comment https://www.fordxr6turbo.com/forum/topic/64947-fitted-35-exhaust/#findComment-969724 Share on other sites More sharing options...
lozza Member 121 Member For: 15y 5m 26d Gender: Male Location: Westside Melbourne Posted 11/01/10 09:27 AM Author Share Posted 11/01/10 09:27 AM On 11/01/2010 at 1:25 AM, Dirty32 said: You would also want to be very careful bashing 6000 revs...Definately risking Oil Pump gears (big cost if they go!!) and without a tune, possibly your engine (depending on model of vehicle).With the exception of drag built monsters, 99% of the cars on this site will not make any more power past 5500 rpm anyways, so you shouldnt need to go to 6000!Not too sure if ive pushed it that hard, just a bit of fun down the skidpan was too busy watching the road instead of the rpm, doh! Link to comment https://www.fordxr6turbo.com/forum/topic/64947-fitted-35-exhaust/#findComment-969871 Share on other sites More sharing options...
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