753603 + 753606 is (was) the combination on my wish list, but I am not sure now.....Lukas said:Well, the dyno speaks for itself. 753603 + 753606 = 1 hp gain, 9 Nm loss. Any ideas?
Hello bigboy, thanks for your nice PMs.bigboy said:Haven't had the car dyno'd so don't know if there is any 'real' performance benefit but car pull's better from low down and sounds glorious!!!
Mind you I've also got the CDA induction kit (minus inlet pipe as it fell off!) and an Angel tuning re-map so maybe it's just they all work well together...
Unortunately I don't think so. It has been some 5 days and 500 km before I went to the dyno for the second time. The car has been reved hardly few times. So the exhaust had time and possibilities to bed in I think.gotcha said:I have one more idea. Both your central and end silencers are new. They might have still some resistance to the airflow. Maybe after few hundres of kilometers the damping material will "drive in" a little...
Photos enclosed. I would say that the mid one is in the same place as old. SS do not includes the smallest one which is originally between mid and end. So it should not mess the torque.jomor said:the distance from the cylinder's outlet to the midlle box is responsible for the rpm that the maximum torque appears, while the shape- construction of the box is responsible of the torque number. Removing the middle box opens up the free flow increasing the bhp but messing up the torque. So your problem is probably related to this.
Well, writing 1 hp gain was kinda joke - of course it is no gain neither loss, just status quo. Redd, I had some experience with so called custom exhaust made by 'tuning guru' :rant: :rant: :rant: . I had lost both torque and power. Never again! That's why I spent money on SS. I trusted they new what they are doing so I do not buy "the diameter was too large" (even though it is possible reason as far as I remember from articles I read somewhere). It is dedicated exhaust, SS must now the 1,6 TS diameter and consequnces of enlarging. Moreover - the same exhaust fits to all TS so the engine capacity doesn't (shouldn't) matter.Redd said:good one lukas. 1hp is insignificant. readings may vary by as much as 2-3hp on the same day on back-to-back dyno runs. ive long suspected the effectiveness of SS having one exhaust setup for 1.6, 1.8, 2.0, and 2.5L engines. sounds like u lost torque cos exhaust diameter was simply too large for ur car.
are custom exhaust setups cheap in poland? if so, id suggest u go that route. good luck! redd
I agree, what you say can be advantages but it's not what has been expected. Shall I sing 'always look at the bright side of life' ? :cheese: I don't think so. There is no statement on the box: "Be aware of serious torque loss". Moreover, on the every dyno they quote on their website thet show increases - even on the 1,6 120 hp (this dyno result has been the subject of the discussion in one of the thread in the past).Paulo Mendes said:At least you have 1hp gain…not bad!!!
Let me explain…the engine are optimized to have certain quantity on air intake and exhaust exit…if you enlarge your exhaust exit you have less exhaust back pressure, then…less torque!
Of course not all its bad…you have a loss in torque and low revs…but you have gains in top power, high revs!
Look again at your dyno and see the max engine power value…in OEM you have 101.5PS at 6065rpm…..but with SS mod you have 104.2PS at 6510rpm….more 2.7PS at higher rpm, more 445rpm!!!
Weather conditions are shown on the right bottom of the page. They are very similar. On the other hand the dyno's software corrects all of this to be a comparable result. So, still loss means loss.Alfadublin said:The cause might very well be ambient air temp,air pressure and humidity on the day of the test.Alos over fueling or under fueling of the injectors and their cycle duty.Possible glitch with the MAF reading sent to the ECU aswell.
They might be similar,but are they exactly the same and dead accurate?Even a slight increase in intake temp or the ambient air temp will increase or decrease bhp/torque.Lukas said:Weather conditions are shown on the right bottom of the page. They are very similar. On the other hand the dyno's software corrects all of this to be a comparable result. So, still loss means loss.
Your pipe is the most beatiful one I have ever seen .Alfadublin said:They might be similar,but are they exactly the same and dead accurate?Even a slight increase in intake temp or the ambient air temp will increase or decrease bhp/torque.
Heres my exhaust pipework,no silencers at all.Loud.free flowing and spits flames all the time too.Lambda/oxygen sensor lead at the top is for the AEM air/fuel ratio guage and data logger system.
P.S Did you make sure that the injector feed/cycles were all the same and that the fuel flow wasnt too lean or too rich.This can also loose bhp,if not set up correctly.
DO NOT close this thread.Please and thanks.Its a good and informative thread and its nice to read other peoples tuning/dyno experiences.I like.enjoy reading your posts and looking at your pics,so do many others too.Lukas said:Your pipe is the most beatiful one I have ever seen .
Well, we are looking for causes but the answers sound like SS's lawyer speech :lol: . This is a joke I very apreciate your help, really ,but it is close to say all is my fault, the dyno is !!!! worth, then I will say sorry asking to close this thread . During 4 years my car has been three times at the dyno. First during the club meet (just for fun), second while thinking of lack of power ,third is now. All three tests showed the OEM data. Three different dynos at three different parts of Poland through 4 yeras time.
Summing up I would say that the diameter may be the reason for torque loss > Alfadublin, do ya remember > OEM (40mm) ?SS says "Oversize Ø 54mm system".
Man! Amazing! Your answer (URLs) impressed me so much that I can't put next word... :cheese: :cheese: :cheese: :cheese: !daveg360 said:The weather figures listed seem to be way out.